Polycyclic aryl and heteroaryl substituted 4-pyrones useful for selective inhibition of the coagulation cascade

ABSTRACT

The invention relates to polycyclic aryl and heteroaryl substituted 4-pyrone compounds useful as inhibitors of serine proteases of the coagulation cascade and compounds, compositions and methods for anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular diseases.

FIELD OF THE INVENTION

This invention is in the field of anticoagulant therapy, and specifically relates to compounds, compositions and methods for preventing and treating thrombotic conditions such as coronary artery and cerebrovascular disease. More particularly, the invention relates to polycyclic aryl and heteroaryl substituted 4-pyrone compounds that inhibit serine proteases of the coagulation cascade.

BACKGROUND OF THE INVENTION

Physiological systems control the fluidity of blood in mammals [Majerus, P. W. et al: Anticoaoulant, Thrombolytic, and Antiplatelet Drugs. In Hardman, J. G. and Limbird, L. E., editors: Goodman & Gilman's The Pharmacological Basis of Therapeutics. 9th edition. New York, McGraw-Hill Book Co., 1996, pp. 1341-1343]. Blood must remain fluid within the vascular systems and yet be able to undergo hemostasis, cessation of blood loss from a damaged vessel, quickly. Hemostasis or clotting begins when platelets first adhere to macromolecules in subendothelian regions of an injured and/or damaged vessels. These platelets aggregate to form the primary hemostatic plug and stimulate local activation of plasma coagulation factors leading to generation of a fibrin clot that reinforces the aggregated platelets.

Plasma coagulation factors include factors II, V, VII, VIII, IX, X, XI, and XII; these are also called protease zymogens. These coagulation factors or protease zymogens are activated by serine proteases leading to coagulation in a so called “coagulation cascade” or chain reaction [Handin, R. I.: Bleeding and Thrombosis. In Wilson, J., et al. editors: Harrison's Principles of Internal Medicine. 12th Edition, New York, McGraw-Hill Book Co., 1991, p. 350]. Coagulation or clotting occurs in two ways through different pathways. An intrinsic or contact pathway leads from XII to XIIa to XIa to IXa and to the conversion of X to Xa. Xa with factor Va converts prothrombin (II) to thrombin (IIa) leading to conversion of fibrinogen to fibrin. Polymerization of fibrin leads to a fibrin clot. An extrinsic pathway is initiated by the conversion of coagulation factor VII to VIIa by Xa. The presence of Tissue Factor and VIIa accelerates formation of Xa in the presence of calcium ion and phospholipids. Formation of Xa leads to thrombin, fibrin, and a fibrin clot as described above. The presence of one or more of these many different coagulation factors and two distinct pathways of clotting could enable the efficacious, selective control and better understanding of parts of the coagulation or clotting process.

While clotting as a result of an injury to a blood vessel is a critical physiological process for mammals such as man, clotting can also lead to disease states. A pathological process called thrombosis results when platelet aggregation and/or a fibrin clot blocks (i.e., occludes) a blood vessel. Arterial thrombosis may result in ischemic necrosis of the tissue supplied by the artery.

When the thrombosis occurs in a coronary artery, a myocardial infarction or heart attack can result. A thrombosis occurring in a vein may cause tissues drained by the vein to become edematous and inflamed. Thrombosis of a deep vein may be complicated by a pulmonary embolism. Preventing or treating clots in a blood vessel may be therapeutically useful by inhibiting formation of blood platelet aggregates, inhibiting formation of fibrin, inhibiting thrombus formation, inhibiting embolus formation, and for treating or preventing unstable angina, refractory angina, myocardial infarction, transient ischemic attacks, atrial fibrillation, thrombotic stroke, embolic stroke, deep vein thrombosis, disseminated intravascular coagulation, ocular build up of fibrin, and reocclusion or restenosis of recanalized vessels.

There have been several reports of non-peptidic and peptidic 2-pyridone compounds that act as an inhibitor of a coagulation factor present in the coagulation cascade or clotting process. In U.S. Pat. No. 5,668,289, Sanderson et al. describe 6-alkyl, 6-cycloalkyl, and 6-trifluoromethyl 2-pyridones unsubstituted at the 4 and 5 positions and reported to inhibit thrombin. In PCT Patent Application WO 97/01338, Sanderson et al. describe 6-alkyl, 6 cycloalkyl, and 6-trifluoromethyl 2-pyridones unsubstituted at the 4 and 5 positions and reported to inhibit thrombin. In U.S. Pat. No. 5,792,779, Sanderson et al. describe substituted 4,6-alkyl, 4,6-cycloalkyl, and 4,6-trifluoromethyl 2-pyridones having utility as thrombin inhibitors. In PCG Patent Application WO 97/30708, Sanderson et al. describe additional substituted 4,6-alkyl, 4,6-cycloalkyl, and 4,6-trifluoromethyl 2-pyridones having utility as thrombin inhibitors. In U.S. Pat. No. 5,869,487, Coburn et al. describe pyrido[3,4B]pyrazines containing a fused 6-methyl-2-pyridone functionality and having utility as thrombin inhibitors. In PCT Patent Application WO 98/47876, Van Boeckel et al. describe 6-alkyl-2-pyridones as anti-thrombotic compounds. In PCT Patent Application WO 98/16547, Zhu and Scarborough describe 4,5,6-substituted-3-amino-2-pyridonylacetamides containing amide substituents having a heteroaroyl functions and having activity against mammalian factor Xa. In U.S. Pat. No. 5,656,645, Tamura et al. describe 4,5,6-substituted-3-amino-2-pyridonyl-acetamides containing amide substituents having a formyl function and having activity against thrombin. In U.S. Pat. No. 5,658,930, Tamura et al. again describe 4,5,6-substituted-3-amino-2-pyridonyl-acetamides containing amide substituents having a formyl function and having activity against thrombin. In PCT Patent Applications 96/18644, Tamura et al. further describe 4,5,6-substituted-3-amino-2-pyridonylacetamides containing amide substituents having a formyl function and having activity against thrombin. In PCT Patent Application WO 98/31670, Sanderson et al. describe additional 4-substituted 6-alkyl, 6-cycloalkyl, and 6-trifluoromethylpyridones having utility as thrombin inhibitors. In PCT Patent Application WO 98/17274, Coburn et al. disclose substituted 3,4-diamino-6-methyl-2-pyridones having utility as human thrombin inhibitors. In PCT Patent Application WO 98/42342, Isaacs et al. describe additional 6-alkyl, cycloalkyl, and trifluoromethyl substituted 2-pyridones reported to inhibit human thrombin.

In contrast to the disclosures that some 2-pyridone derivatives may function as thrombin inhibitors, 4-pyrone compounds, compositions thereof, their use for preventing and treating thrombotic conditions such as coronary artery and cerebrovascular disease, and their ability to inhibit serine proteases of the coagulation cascade have not been previously disclosed.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide novel compounds that are beneficial in anticoagulant therapy and that have a general structure:

It is another object of the present invention to provide methods for preventing and treating thrombotic conditions, such as coronary artery disease, cerebrovascular disease, and other coagulation related disorders. Such thrombotic conditions are prevented and treated by administering to a patient in need thereof an effective amount of compounds of Formula (I).

Various other objects and advantages of the present invention will become apparent from the following description of the invention.

DESCRIPTION OF THE INVENTION

The present invention relates to a class of compounds comprising Polycyclic Aryl and Heteroaryl Substituted 4-pyrones, which are beneficial in anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular disease, as given in

-   -   or a pharmaceutically acceptable salt thereof, wherein;     -   B is formula (V):         wherein D¹, D², J¹, J² and K¹ are independently selected from         the group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, no more         than one of D¹, D², J¹, J² and K¹ can be O, no more than one of         D¹, D², J¹, J² and K¹ can be S, one of D¹, D², J¹, J² and K¹         must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O         and S, and no more than four of D¹, D², J¹, J² and K¹ can be N         with the proviso that R³², R³³, R³⁴, R³⁵, and R³⁶ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ can independently be Q^(b);     -   R⁹, R¹⁰, R¹¹, R¹², R¹³, R¹⁶, R¹⁷, R¹⁸, R¹⁹, R³², R³³, R³⁴, R³⁵,         and R³⁶ are independently selected from the group consisting of         hydrido, amidino, guanidino, dialkylsulfonium,         trialkylphosphonium, dialkylsulfoniumalkyl, carboxy,         heteroaralkylthio, heteroaralkoxy, cycloalkylamino, acylalkyl,         acylalkoxy, aryloylalkoxy, heterocyclyloxy, aralkylaryl,         aralkyl, aralkenyl, aralkynyl, heterocyclyl, perhaloaralkyl,         aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl,         aralkylsulfinylalkyl, halocycloalkyl, halocycloalkenyl,         cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl,         cycloalkylsulfonylalkyl, heteroarylamino,         N-heteroarylamino-N-alkylamino, heteroarylaminoalkyl,         haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl,         haloalkoxylalkyl, heteroaralkoxy, cycloalkoxy, cycloalkenyloxy,         cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl,         cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl,         halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino,         alkoxyamino, thio, nitro, lower alkylamino, alkylthio,         alkylthioalkyl, arylamino, aralkylamino, arylthio,         arylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl,         alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl,         heteroarylsulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl,         alkylsulfonylalkyl, haloalkylsulfinylalkyl, haloalkyl         sulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl,         amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl,         monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl,         monoalkyl monoaryl amidosulfonyl, arylsulfinyl, arylsulfonyl,         heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl,         heterocyclylsulfonyl, heterocyclylthio, alkanoyl, alkenoyl,         aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl,         alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky,         alkylenedioxy, haloalkylenedioxy, cycloalkyl,         cycloalkylalkanoyl, cycloalkenyl, lower cycloalkylalkyl, lower         cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy,         hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, aminoalkyl,         hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy,         aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially         saturated heterocyclyl, heteroaryl, heteroaryloxy,         heteroaryloxyalkyl, arylalkyl, heteroarylalkyl, arylalkenyl,         heteroarylalkenyl, carboxyalkyl, carboalkoxy, alkoxycarboxamido,         alkylamidocarbonyl amido, arylamidocarbonylamido,         carboalkoxyalkyl, carboalkoxyalkenyl, carboaralkoxy,         carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy,         phosphono, phosphonoalkyl, diaralkoxyphosphono, and         diaralkoxyphosphonoalkyl;     -   R³² and R³³, R³³ and R³⁴, R³⁴ and R³⁵, and R³⁵ and R³⁶ can be         independently selected to form a spacer pair wherein a spacer         pair is taken together to form a linear moiety having from 3         through 6 contiguous atoms connecting the points of bonding of         said spacer pair members to form a ring selected from the group         consisting of a cycloalkenyl ring having 5 through 8 contiguous         members, a partially saturated heterocyclyl ring having 5         through 8 contiguous members, a heteroaryl ring having 5 through         6 contiguous members, and an aryl with the proviso that no more         than one of the group consisting of spacer pairs R³² and R³³,         R³³ and R³⁴, R³⁴ and R³⁵ and and R³⁶ can be used at the same         time;     -   R⁹ and R¹⁰, R¹⁰ and R¹¹, R¹¹ and R¹² and R¹² and R¹³ can be         independently selected to form a spacer pair wherein a spacer         pair is taken together to form a linear moiety having from 3         through 6 contiguous atoms connecting the points of bonding of         said spacer pair members to form a ring selected from the group         consisting of a cycloalkenyl ring having 5 through 8 contiguous         members, a partially saturated heterocyclyl ring having 5         through 8 contiguous members, a heteroaryl ring having 5 through         6 contiguous members, and an aryl with the proviso that no more         than one of the group consisting of spacer pairs R⁹ and R¹⁰, R¹⁰         and R¹¹, R¹¹ and R¹² and R¹² and R¹³ can be used at the same         time;     -   B can be formula (VI):         wherein D³, D⁴, J³, and J⁴ are independently selected from the         group consisting of C, N, O, and S, no more than one of D³, D⁴,         J³ and J⁴ can be O, no more than one of D³, D⁴, J³, and J⁴ can         be S, and no more than three of D¹, D², J¹ and J² can be N with         the proviso that R³², R³³, R³⁴, and R³⁵ are each independently         selected to maintain the tetravalent nature of carbon, trivalent         nature of nitrogen, the divalent nature of sulfur, and the         divalent nature of oxygen;     -   B can be selected from the group consisting of C3-C8 alkyl,         C3-C8 alkenyl, C3-C8 alkynyl, C3-C8 haloalkyl, and C3-C8         haloalkenyl wherein each member of group B may be optionally         substituted at any carbon up to and including 6 atoms from the         point of attachment of B to A with one or more of the group         consisting of R₃₂, R₃₃, R₃₄, R₃₅, and R₃₆;     -   B can be selected from the group consisting of C3-C10         cycloalkyl, C5-C10 cycloalkenyl, C4-C9 saturated heterocyclyl,         and C4-C9 partially saturated heterocyclyl, wherein each ring         carbon may be optionally substituted with R₃₃, a ring carbon         other than the ring carbon at the point of attachment of B to A         may be optionally substituted with oxo provided that no more         than one ring carbon is substituted by oxo at the same time,         ring carbon and nitrogen atoms adjacent to the carbon atom at         the point of attachment may be optionally substituted with R₉ or         R₁₃, a ring carbon or nitrogen atom adjacent to the R₉ position         and two atoms from the point of attachment may be substituted         with R₁₀, a ring carbon or nitrogen atom adjacent to the R₁₃         position and two atoms from the point of attachment may be         substituted with R₁₂, a ring carbon or nitrogen atom three atoms         from the point of attachment and adjacent to the R₁₀ position         may be substituted with R₁₁, a ring carbon or nitrogen atom         three atoms from the point of attachment and adjacent to the R₁₂         position may be substituted with R₃₃, and a ring carbon or         nitrogen atom four atoms from the point of attachment and         adjacent to the R₁₁ and R₃₃ positions may be substituted with         R₃₄;     -   A is selected from the group consisting of single covalent bond,         (W⁷)_(rr)-(CH(R¹⁵))_(pa) and (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr         is an integer selected from 0 through 1, pa is an integer         selected from 0 through 6, and W⁷ is selected from the group         consisting of O, S, C(O), C(S), C(O)S, C(S)O, C(O)N(R⁷),         C(S)N(R⁷), (R⁷)NC(O), (R⁷)NC(S), S(O), S(O)₂, S(O)₂N(R⁷),         (R⁷)NS(O)₂, Se(O), Se(O)₂, Se(O)₂N(R⁷), (R⁷)NSe(O)₂, P(O)(R⁸),         N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), C(NR⁷)N(R⁷), (R⁷)NC(NR⁷), and         N(R⁷).

R⁷ and R⁸ are independently selected from the group consisting of hydrido, hydroxy, alkyl, alkenyl, aryl, aralkyl, aryloxy, alkoxy, alkenyloxy, alkylthio, alkylamino, arylthio, arylamino, acyl, aroyl, heteroaroyl, aralkoxyalkyl, heteroaralkoxyalkyl, aryloxyalkyl, alkoxyalkyl, alkenyloxyalkyl, alkylthioalkyl, arylthioalkyl, aralkoxyalkyl, heteroaralkoxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, heteroaryl, heteroaryloxy, heteroarylamino, heteroaralkyl, heteroaralkyloxy, heteroaralkylamino, and heteroaryloxyalkyl;

-   -   R¹⁴, R¹⁵, R³⁷, R³⁸, R³⁹, R⁴⁰, R⁴¹ and R⁴² are independently         selected from the group consisting of hydrido, hydroxy, halo,         cyano, aryloxy, amino, alkylamino, dialkylamino, hydroxyalkyl,         aminoalkyl, acyl, aroyl, heteroaroyl, heteroaryloxyalkyl,         sulfhydryl, acylamido, alkoxy, alkylthio, arylthio, alkyl,         alkenyl, alkynyl, aryl, aralkyl, aryloxyalkyl,         aralkoxyalkylalkoxy, alkylsulfinylalkyl, alkylsulfonylalkyl,         aralkylthioalkyl, heteroaralkoxythioalkyl, alkoxyalkyl,         heteroaryloxyalkyl, alkenyloxyalkyl, alkylthioalkyl,         arylthioalkyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl,         cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl,         halocycloalkyl, halocycloalkenyl, haloalkoxy, haloalkoxyalkyl,         haloalkenyloxyalkyl, halocycloalkoxy, halocycloalkoxyalkyl,         halocycloalkenyloxyalkyl, saturated heterocyclyl, partially         saturated heterocyclyl, heteroaryl, heteroarylalkyl,         heteroarylthioalkyl, heteroaralkylthioalkyl,         monocarboalkoxyalkyl, dicarboalkoxyalkyl, monocyanoalkyl,         dicyanoalkyl, carboalkoxycyanoalkyl, alkylsulfinyl,         alkylsulfonyl, haloalkylsulfinyl, haloalkylsulfonyl,         arylsulfinyl, arylsulfinylalkyl, arylsulfonyl,         arylsulfonylalkyl, aralkylsulfinyl, aralkylsulfonyl,         cycloalkylsulfinyl, cycloalkylsulfonyl, cycloalkylsulfinylalkyl,         cycloalkylsufonylalkyl, heteroarylsulfonylalkyl,         heteroarylsulfinyl, heteroarylsulfonyl, heteroarylsulfinylalkyl,         aralkylsulfinylalkyl, aralkylsulfonylalkyl, carboxy,         carboxyalkyl, carboalkoxy, carboxamide, carboxamidoalkyl,         carboaralkoxy, trialkylsilyl, dialkoxyphosphono,         diaralkoxyphosphono, dialkoxyphosphonoalkyl, and         diaralkoxyphosphonoalkyl;     -   R¹⁴ and R¹⁴, when bonded to different carbons, can be taken         together to form a group selected from the group consisting of         covalent bond, alkylene, haloalkylene, and a linear moiety         spacer selected to form a ring selected from the group         consisting of cycloalkyl ring having from 5 through 8 contiguous         members, cycloalkenyl ring having from 5 through 8 contiguous         members, and a heterocyclyl having from 5 through 8 contiguous         members;     -   R¹⁴ and R¹⁵, when bonded to different carbons, can be taken         together to form a group selected from the group consisting of         covalent bond, alkylene, haloalkylene, and a linear moiety         spacer selected to form a ring selected from the group         consisting of a cycloalkyl ring having from 5 through 8         contiguous members, a cycloalkenyl ring having from 5 through 8         contiguous members, and a heterocyclyl having from 5 through 8         contiguous members;     -   R¹⁵ and R¹⁵, when bonded to different carbons, can be taken         together to form a group selected from the group consisting of         covalent bond, alkylene, haloalkylene, and a linear moiety         spacer selected to form a ring selected from the group         consisting of cycloalkyl ring having from 5 through 8 contiguous         members, cycloalkenyl ring having from 5 through 8 contiguous         members, and a heterocyclyl having from 5 through 8 contiguous         members;     -   Ψ is selected from the group consisting of NR⁵, O, C(O), C(S),         S, S(O), S(O)₂, ON(R⁵), P(O)(R⁸), and CR³⁹R⁴⁰;     -   R⁵ is selected from the group consisting of hydrido, alkyl,         alkenyl, alkynyl, aryl, aralkyl, aryloxy, alkoxy, alkenyloxy,         alkylthio, arylthio, aralkoxyalkyl, heteroaralkoxyalkyl,         aryloxyalkyl, alkoxyalkyl, alkenyloxyalkyl, alkylthioalkyl,         arylthioalkyl, aralkoxyalkyl, heteroaralkoxyalkyl,         alkylsulfinylalkyl, alkylsulfonylalkyl, cycloalkyl,         cycloalkylalkyl, cycloalkylalkenyl, cycloalkenyl,         cycloalkenylalkyl, haloalkyl, haloalkenyl, halocycloalkyl,         halocycloalkenyl, haloalkoxyalkyl, haloalkenyloxyalkyl,         halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, heteroaryl,         heteroarylalkyl, monocarboalkoxyalkyl, monocarboalkoxy,         dicarboalkoxyalkyl, monocarboxamido, monocyanoalkyl,         dicyanoalkyl, carboalkoxycyanoalkyl, acyl, aroyl, heteroaroyl,         heteroaryloxyalkyl, and dialkoxyphosphonoalkyl;     -   R³⁹ and R⁴⁰, when bonded to the same carbon, can be taken         together to form a group selected from a group consisting of         oxo, thiono, R⁵—N, alkylene, haloalkylene, and a linear moiety         spacer having from 2 through 7 contiguous atoms to form a ring         selected from the group consisting of a cycloalkyl ring having         from 3 through 8 contiguous members, a cycloalkenyl ring having         from 3 through 8 contiguous members, and a heterocyclyl ring         having from 3 through 8 contiguous members;     -   X⁰ and R² are independently selected from the group consisting         of Z⁰-Q, hydrido, alkyl, alkenyl, and halo;     -   X⁰ and R² can be independently selected from the group         consisting of amidino, guanidino, dialkylsulfonium,         trialkylphosphonium, dialkylsulfoniumalkyl, heteroarylamino,         amino, nitro, alkylamino, arylamino, aralkylamino, alkanoyl,         alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl,         haloalkanoyl, hydroxyhaloalkyl, cyano, and phosphono;     -   X⁰ and R⁵ can be taken together to form a spacer pair wherein         the spacer pair forms a linear spacer moiety having from 2         through 5 contiguous atoms connecting the points of bonding of         said spacer pair members to form a heterocyclyl ring having from         5 through 8 contiguous members;     -   X⁰ and R³⁹ can be taken together to form a spacer pair wherein         the spacer pair forms a linear spacer moiety having from 2         through 5 contiguous atoms connecting the points of bonding of         said spacer pair members to form a heterocyclyl ring having from         5 through 8 contiguous members;     -   X⁰ and R⁴⁰ can be taken together to form a spacer pair wherein         the spacer pair forms a linear spacer moiety having from 2         through 5 contiguous atoms connecting the points of bonding of         said spacer pair members to form a heterocyclyl ring having from         5 through 8 contiguous members;     -   X⁰ can be independently selected to form a linear moiety having         from 2 through 5 contiguous atoms linked to the points of         bonding of both R³⁹ and R⁴⁰ to form a heterocyclyl ring having         from 5 through 8 contiguous members;     -   R² and R^(4a), R² and R^(4b), R² and R¹⁴, and R² and R¹⁵ can be         independently selected to form spacer pairs wherein a spacer         pair is taken together to form a linear moiety having from 2         through 5 contiguous atoms connecting the points of bonding of         said spacer pair members to form a heterocyclyl ring having from         5 through 8 contiguous members with the proviso that no more         than one of the group of spacer pairs consisting of R² and         R^(4a), R² and R^(4b), R² and R¹⁴, and R² and R¹⁵ can be used at         the same time;     -   R² can be independently selected to form a linear moiety having         from 2 through 5 contiguous atoms linked to the points of         bonding of both R^(4a) and R^(4b) to form a heterocyclyl ring         having from 5 through 8 contiguous members;     -   Z⁰ is selected from the group consisting of covalent single         bond, (CR⁴¹R⁴²)_(q) wherein q is an integer selected from 1         through 6, (CH(R⁴¹))_(g)—W⁰—(CH(R⁴²))_(p) wherein g and p are         integers independently selected from 0 through 3 and W⁰ is         selected from the group consisting of O, S, C(O), C(S), C(O)O,         C(S)O, C(O)S, C(S)S, C(O)N(R⁴¹), (R⁴¹)NC(O), C(S)N(R⁴¹),         (R⁴¹)NC(S), OC(O)N(R⁴¹),(R⁴¹)NC(O)O, SC(S)N(R⁴¹), (R⁴¹)NC(S)S,         SC(O)N(R⁴¹),(R⁴¹)NC(O)S, OC(S)N(R⁴¹), (R⁴¹)NC(S)O,         N(R⁴²)C(O)N(R⁴¹), (R⁴¹)NC(O)N(R⁴²), N(R⁴²)C(S)N(R⁴¹),         (R⁴¹)NC(S)N(R⁴²), S(O), S(O)₂, S(O)₂N(R⁴¹), N(R⁴¹)S(O)₂, Se,         Se(O), Se(O)₂, Se(O)₂N(R⁴¹), N(R⁴¹)Se(O)₂, P(O)(R⁸),         N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁴¹), ON(R⁴¹), and SiR²⁸R²⁹, and         (CH(R⁴¹))_(e)—W²—(CH(R⁴²))_(h) wherein e and h are integers         independently selected from 0 through 2 and W² is selected from         the group consisting of CR⁴¹═CR⁴², CR⁴¹R⁴²═C; vinylidene), and         ethynylidene (C≡C; 1,2-ethynyl), with the proviso that R⁴¹ and         R⁴² are selected from other than halo and cyano when directly         bonded to N and Z⁰ is directly bonded to the pyrone ring;     -   Q is formula (II):         wherein D¹, D², J¹, J² and K¹ are independently selected from         the group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, no more         than one of D¹, D², J¹, J² and K¹ can be O, no more than one of         D¹, D², J¹, J² and K¹ can be S, one of D¹, D², J¹, J² and K¹         must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O         and S, and no more than four of D¹, D², J¹, J² and K¹ can be N,         with the proviso that R⁹, R¹⁰, R¹¹, R¹², and R¹³ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   Q can be formula (III):         wherein D³, D⁴, J³, and J⁴ are independently selected from the         group consisting of C, N, O, and S, no more than one of D³, D⁴,         J³, and J⁴ can be O, no more than one of D³, D⁴, J³, and J⁴ can         be S, and no more than three of D¹, D², J¹, and J² can be N with         the proviso that R⁹, R¹⁰, R¹¹, and R¹² are each independently         selected to maintain the tetravalent nature of carbon, trivalent         nature of nitrogen, the divalent nature of sulfur, and the         divalent nature of oxygen;     -   Q can be selected from the group consisting of alkyl, alkoxy,         alkylamino, alkylthio, haloalkylthio, alkenyl, alkynyl,         saturated heterocyclyl, partially saturated heterocyclyl, acyl,         aroyl, heteroaroyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl,         cycloalkenylalkyl, cycloalkylalkenyl, haloalkyl, haloalkoxy,         haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl,         haloalkenyloxyalkyl, halocycloalkoxyalkyl, and         halocycloalkenyloxyalkyl;     -   K is (CR^(4a)R^(4b))_(n) wherein n is an integer selected from 1         through 4;     -   R^(4a) and R^(4b) are independently selected from the group         consisting of halo, hydrido, hydroxy, cyano, hydroxyalkyl,         alkyl, alkenyl, aryl, aralkyl, aralkoxyalkyl, aryloxyalkyl,         alkoxyalkyl, heteroaryloxyalkyl, alkenyloxyalkyl,         alkylthioalkyl, aralkylthioalkyl, arylthioalkyl, cycloalkyl,         cycloalkylalkyl, haloalkyl, haloalkenyl, heteroaryl,         heteroarylalkyl, heteroarylthioalkyl, heteroaralkylthioalkyl,         cyanoalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl,         haloalkylsulfunyl, aryl sulfinylalkyl, arylsulfonylalkyl,         heteroarylsulfonylalkyl, heteroarylsulfinylalkyl,         aralkylsulfinylalkyl, and aralkylsulfonylalkyl;     -   R^(4a) and R^(4b), when bonded to the same carbon, can be taken         together to form a group selected from the group consisting of         oxo, thiono, and a linear spacer moiety having from 2 through 7         contiguous atoms connected to form a ring selected from the         group consisting of a cycloalkyl ring having 3 through 8         contiguous members, a cycloalkenyl ring having 5 through 8         contiguous members, and a heterocyclyl ring having 5 through 8         contiguous members;     -   E⁰ is E¹, when K is (CR^(4a)R^(4b))_(n) wherein E¹ is selected         from the group consisting of a covalent single bond, O, S, C(O),         C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O),         C(S)N(R⁷), (R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷),         (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷),(R⁷)NC(S)O,         N(R⁸)C(O)N(R⁷),(R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸),         S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, S(O)₂N(R⁷)C(O),         C(O)N(R⁷)S(O)₂, Se, Se(O), Se(O)₂, Se(O)₂N(R⁷), N(R⁷)Se(O)₂,         P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁷), ON(R⁷), SiR²⁸R²⁹,         CR^(4a)═CR^(4b), ethynylidene (C≡C; 1,2-ethynyl), and         C═CR^(4a)R^(4b);     -   R²⁸ and R²⁹ are independently selected from the group consisting         of hydrido, hydroxyalkyl, alkyl, alkenyl, alkynyl, aryl,         aralkyl, aryloxyalkyl, acyl, aroyl, aralkanoyl, heteroaroyl,         aralkoxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl,         aralkylthioalkyl, heteroaralkylthioalkyl, alkoxyalkyl,         heteroaryloxyalkyl, alkenyloxyalkyl, alkylthioalkyl,         arylthioalkyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl,         cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl,         halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl,         haloalkenyloxyalkyl, halocycloalkoxy, halocycloalkoxyalkyl,         halocycloalkenyloxyalkyl, perhaloaryl, perhaloaralkyl,         perhaloaryloxyalkyl, heteroaryl, heteroarylalkyl,         heteroarylthioalkyl, heteroaralkylthioalkyl, cyanoalkyl,         dicyanoalkyl, carboxamidoalkyl, dicarboxamidoalkyl,         cyanocarboalkoxyalkyl, carboalkoxyalkyl, dicarboalkoxyalkyl,         cyanocycloalkyl, dicyanocycloalkyl, carboxamidocycloalkyl,         dicarboxamidocycloalkyl, carboalkoxycyanocycloalkyl,         carboalkoxycycloalkyl, dicarboalkoxycycloalkyl, formylalkyl,         acylalkyl, arylsulfinylalkyl, arylsulfonylalkyl,         aralkylsulfinyl, cycloalkylsulfinylalkyl,         cycloalkylsufonylalkyl, heteroarylsulfonylalkyl,         heteroarylsulfinylalkyl, aralkylsulfinylalkyl,         aralkylsulfonylalkyl, carboxy, dialkoxyphosphono,         diaralkoxyphosphono, dialkoxyphosphonoalkyl and         diaralkoxyphosphonoalkyl;     -   R²⁸ and R²⁹ can be taken together to form a linear moiety spacer         having from 2 through 7 contiguous atoms and forming a ring         selected from the group consisting of a cycloalkyl ring having         from 3 through 8 contiguous members, a cycloalkenyl ring having         from 3 through 8 contiguous members, and a heterocyclyl ring         having from 3 through 8 contiguous members;     -   K can be (CH(R¹⁴))_(j)-T wherein j is selected from a integer         from 0 through 3 and T is selected from the group consisting of         single covalent bond, O, S, and N(R⁷) with the proviso that         (CH(R¹⁴))_(j) is bonded to the pyrone ring;     -   E⁰ is E², when K is (CH(R¹⁴))_(j)-T, wherein E² is selected from         the group consisting of a covalent single bond, C(O), C(S),         C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷),         (R⁷)NC(S), (R⁷)NC(O)O, (R⁷)NC(S)S, (R⁷)NC(O)S, (R⁷)NC(S)O,         N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸),         S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, S(O)₂N(H)C(O),         C(O)N(H)S(O)₂, Se(O), Se(O)₂, Se(O)₂N(R⁷), N(R⁷)Se(O)₂,         P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), and N(R⁷);     -   K can be G-(CH(R¹⁵))_(k) wherein k is selected from an integer         from 1 through 3 and G is selected from the group consisting of         O, S, and N(R⁷) with the proviso that R¹⁵ is other than hydroxy,         cyano, halo, amino, alkylamino, dialkylamino, and sulfhydryl         when k is 1;     -   E⁰ is E³ when K is G-(CH(R¹⁵))_(k) wherein E³ is selected from         the group consisting of a covalent single bond, O, S, C(O),         C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O),         C(S)N(R⁷), (R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷),         (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷), (R⁷)NC(S)O,         N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸),         S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, Se, Se(O), Se(O)₂,         Se(O)₂N(R⁷), N(R⁷)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸),         P(O)(R⁸)N(R⁷), N(R⁷), ON(R⁷), SiR²⁸R²⁹ CR^(4a)═CR^(4b),         ethynylidene (C≡C; 1,2-ethynyl), and C═CR^(4a)R^(4b);     -   Y⁰ is formula (IV):         wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the         group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, K² is         independently selected from the group consisting of C, and N⁺,         no more than one of D⁵, D⁶, J⁵ and J⁶ can be O, no more than one         of D⁵, D⁶, J⁵, and J⁶ can be S, one of D⁵, D⁶, J⁵, and J⁶ must         be a covalent bond when two of D⁵, D⁶, J⁵, and J⁶ are O and S,         no more than three of D⁵, D⁶, J⁵, and J⁶ can be N when K² is N⁺,         and no more than four of D⁵, D⁶, J⁵ and J⁶ can be N when K² is         carbon with the provisos that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   R¹⁶ and R¹⁷ can be independently taken together to form a linear         moiety spacer having from 3 through 6 contiguous atoms connected         to form a ring selected from the group consisting of a         cycloalkenyl ring having from 5 through 8 contiguous members, a         partially saturated heterocyclyl ring having from 5 through 8         contiguous members, a heteroaryl having from 5 through 6         contiguous members, and an aryl;     -   R¹⁸ and R¹⁹ can be independently taken together to form a linear         moiety spacer having from 3 through 6 contiguous atoms connected         to form a ring selected from the group consisting of a         cycloalkenyl ring having from 5 through 8 contiguous members, a         partially saturated heterocyclyl ring having from 5 through 8         contiguous members, a heteroaryl having from 5 through 6         contiguous members, and an aryl;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹,         ⁺NR²⁰R²¹R²², oxy, alkyl, alkylaminoalkyl, aminoalkyl,         dialkylsulfoniumalkyl, and acylamino wherein R²⁰, R²¹, and R²²         are independently selected from the group consisting of hydrido,         alkyl, hydroxy, alkoxy, alkylamino, dialkylamino, aminoalkyl,         and hydroxyalkyl with the provisos that no more than one of R²⁰,         R²¹, and R²² can be hydroxy, alkoxy, alkylamino, amino, and         dialkylamino and that R²⁰, R²¹, and R²² must be other than be         hydroxy, alkoxy, alkylamino, amino, and dialkylamino when K² is         N⁺;     -   R²⁰ and R²¹, R²⁰ and R²², and R²¹ and R²² can be independently         selected to form a spacer pair wherein a spacer pair is taken         together to form a linear moiety having from 4 through 7         contiguous atoms connecting the points of bonding of said spacer         pair members to form a heterocyclyl ring having 5 through 8         contiguous members with the proviso that no more than one of the         group consisting, of spacer pairs R²⁰ and R²¹, R²⁰ and R²², and         R²¹ and R²² can be used at the same time;     -   Q^(b) can be selected from the group consisting of         N(R²⁶)SO₂N(R²³)(R²⁴), N(R²⁶)C(O)OR⁵, N(R²⁶)C(O)SR⁵,         N(R²⁶)C(S)OR⁵ and N(R²⁶)C(S)SR⁵ with the proviso that no more         than one of R²³, R²⁴, and R²⁶ can be hydroxy, alkoxy,         alkylamino, amino, or dialkylamino when two of the group         consisting of R²³, R²⁴, and R²⁶ are bonded to the same atom;     -   Q^(b) can be selected from the group consisting of         dialkylsulfonium, trialkylphosphonium, C(NR²⁵)NR²³R²⁴,         N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)C(O)N(R²³)(R²⁴),         N(R²⁶)C(S)N(R²³)(R²⁴), C(NR²⁵)OR⁵, C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         C(S)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         N(R²⁶)N(R²⁶)SO₂N(R²³)(R²⁴), C(NR²⁵)SR⁵, C(O)NR²³R²⁴, and         C(O)NR²³R²⁴ with the provisos that no more than one of R²³, R²⁴,         and R²⁶ can be hydroxy, alkoxy, alkylamino, amino, or         dialkylamino when two of the group consisting of R²³, R²⁴, and         R²⁶ are bonded to the same atom and that said Q^(b) group is         bonded directly to a carbon atom;     -   R²³, R², R²⁵, and R²⁶ are independently selected from the group         consisting of hydrido, alkyl, hydroxy, alkoxy, alkylamino,         dialkylamino, aminoalkyl, and hydroxyalkyl;     -   R²³ and R²⁴ can be taken together to form a linear spacer moiety         having from 4 through 7 contiguous atoms connecting the points         of bonding to form a heterocyclyl ring having 5 through 8         contiguous members;     -   R²³ and R²⁵, R²⁴ and R²⁵, R²⁵ and R²⁶, R²⁴ and R²⁶, and R²³ and         R²⁶ can be independently selected to form a spacer pair wherein         a spacer pair is taken together from the points of bonding of         selected spacer pair members to form the group L-U-V wherein L,         U, and V are independently selected from the group consisting of         O, S, C(O), C(S), C(J_(H))₂ S(O), SO₂, OP(OR³¹)R³⁰, P(O)R³⁰,         P(S)R³⁰, C(R³⁰)R³¹, C═C(R³⁰)R³¹, (O)₂POP(O)₂, R³⁰ (O)POP(O)R³⁰,         Si(R²⁹)R²⁸, Si(R²⁹)R²⁸Si(R²⁹)R²⁸, Si(R²⁹)R²⁸OSi(R²⁹)R²⁸,         (R²⁸)R²⁹ COC(R²⁸)R²⁹, (R²⁸)R²⁹CSC(R²⁸)R²⁹, C(O)C(R³⁰)═C(R³¹),         C(S)C(R³⁰)═C(R³¹), S(O)C(R³⁰)═C(R³¹), SO₂C(R³⁰)═C(R³¹),         PR³⁰C(R³⁰)═C(R³¹), P(O)R³⁰C(R³⁰)═C(R³¹), P(S)R³⁰C(R³⁰)═C(R³¹),         DC(R³⁰)(R³¹)D, OP(OR³¹)R³⁰, P(O)R³⁰, P(S)R³⁰, Si(R²⁸)R²⁹ and         N(R³⁰), and a covalent bond with the proviso that no more than         any two of L, U and V are simultaneously covalent bonds and the         heterocyclyl comprised of by L, U, and V has from 5 through 10         contiguous member;     -   D is selected from the group consisting of oxygen, C═O, C═S,         S(O)_(m) wherein m is an integer selected from 0 through 2;     -   J_(H) is independently selected from the group consisting of         OR²⁷, SR²⁷ and N(R²⁰)R²¹;

R²⁷ is selected from the group consisting of hydrido, alkyl, alkenyl, alkynyl, aralkyl, aryloxyalkyl, aralkoxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, aralkylthioalkyl, heteroaralkylthioalkyl, alkoxyalkyl, heteroaryloxyalkyl, alkenyloxyalkyl, alkylthioalkyl, arylthioalkyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, perhaloaryloxyalkyl, heteroaryl, heteroarylalkyl, heteroarylthioalkyl, heteroaralkylthioalkyl, arylsulfinylalkyl, arylsulfonylalkyl, cycloalkylsulfinylalkyl, cycloalkylsufonylalkyl, heteroarylsulfonylalkyl, heteroarylsulfinylalkyl, aralkylsulfinylalkyl and aralkyl sulfonylalkyl;

-   -   R³⁰ and R³¹ are independently selected from hydrido, hydroxy,         thiol, aryloxy, amino, alkylamino, dialkylamino, hydroxyalkyl,         heteroaryloxyalkyl, alkoxy, alkylthio, arylthio, alkyl, alkenyl,         alkynyl, aryl, aralkyl, aryloxyalkyl, aralkoxyalkyl,         alkylsulfinylalkyl, alkylsulfonylalkyl, aralkylthioalkyl,         heteroaralkoxythioalkyl, alkoxyalkyl, heteroaryloxyalkyl,         alkenyloxyalkyl, alkylthioalkyl, arylthioalkyl, cycloalkyl,         cycloalkylalkyl, cycloalkylalkenyl, cycloalkenyl,         cycloalkenylalkyl, haloalkyl, haloalkenyl,         haloaralkylsulfinylalkyl, aralkylsulfonylalkyl, cyanoalkyl,         dicyanoalkyl, carboxamidoalkyl, dicarboxamidoalkyl,         cyanocarboalkoxyalkyl, carboalkoxyalkyl, dicarboalkoxyalkyl,         cyanocycloalkyl, dicyanocycloalkyl, carboxamidocycloalkyl,         dicarboxamidocycloalkyl, carboalkoxycyanocycloalkyl,         carboalkoxycycloalkyl, dicarboalkoxycycloalkyl, formylalkyl,         acylalkyl, dialkoxyphosphonoalkyl, diaralkoxyphosphonoalkyl,         phosphonoalkyl, dialkoxyphosphonoalkoxy,         diaralkoxyphosphonoalkoxy, phosphonoalkoxy,         dialkoxyphosphonoalkylamino, diaralkoxyphosphonoalkylamino,         phosphonoalkylamino, dialkoxyphosphonoalkyl,         diaralkoxyphosphonoalkyl, sulfonylalkyl, alkoxysulfonylalkyl,         aralkoxysulfonylalkyl, alkoxysulfonylalkoxy,         aralkoxysulfonylalkoxy, sulfonylalkoxy,         alkoxysulfonylalkylamino, aralkoxysulfonylalkylamino, and         sulfonylalkylamino;     -   R³⁰ and R³¹ can be taken to form a linear moiety spacer group         having from 2 through 7 contiguous atoms to form a ring selected         from the group consisting of a cycloalkyl ring having from 3         through 8 contiguous members, a cycloalkenyl ring having from 3         through 8 contiguous members, and a heterocyclyl ring having         from 3 through 8 contiguous members;     -   R²³ and R²⁵, R²⁴ and R²⁵, R²⁵ and R²⁶, R²⁴ and R²⁶, and R²³ and         R²⁶ can be independently selected to form a spacer pair wherein         a spacer pair is taken together from the points of bonding of         selected spacer pair members to form the group L-U-V wherein L,         U, and V are independently selected from the group of         1,2-disubstituted radicals consisting of a cycloalkyl radical, a         cycloalkenyl radical wherein cycloalkyl and cycloalkenyl         radicals are substituted with one or more groups selected from         R³⁰ and R³¹, an aryl radical, an heteroaryl radical, a saturated         heterocyclic radical and a partially saturated heterocyclic         radical wherein said 1,2-substitutents are independently         selected from C═O, C═S, C(R²⁸)R³², S(O), S(O)₂, OP(OR³¹)R³⁰,         P(O)R³⁰, P(S)R³⁰ and Si(R²⁸)R²⁹;     -   R²³ and R²⁵, R²⁴ and R²⁵, R²⁵ and R²⁶, R²⁴ and R²⁶, and R²³ and         R²⁶ can be independently selected to form a spacer pair wherein         a spacer pair is taken together from the points of bonding of         selected spacer pair members to form the group L-U-V wherein L,         U, and V are independently selected from the group of radicals         consisting of 1,2-disubstituted alkylene radicals and         1,2-disubstituted alkenylene radical wherein said         1,2-substitutents are independently selected from C═O, C═S,         C(R²⁸)R²⁹, S(O), S(O)₂, OP(OR³¹)R³⁰, P(O)R³⁰, P(S)R³⁰, and         Si(R²⁸)R²⁹ and said alkylene and alkenylene radical are         substituted with one or more R³⁰ or R³¹ substituents;     -   Q^(s) is selected from the group consisting of a single covalent         bond, (CR³⁷R³⁸)_(b)—(W⁰)_(az) wherein az is an integer selected         from 0 through 1, b is an integer selected from 1 through 4, and         W⁰ is selected from the group consisting of O, S, C(O), C(S),         C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴),         (R¹⁴)NC(S), OC(O)N(R¹⁴), SC(S)N(R¹⁴), SC(O)N(R¹⁴), OC(S)N(R¹⁴),         N(R¹⁵)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴),         (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, Se,         Se(O), Se(O)₂, Se(O)₂N(R¹⁷), N(R¹⁴)Se(O)₂, P(O)(R⁸), N(R⁷)(R⁸),         P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), and SiR²⁸R²⁹,         (CH(R¹⁴))_(c)—W¹—(CH(R¹⁵))_(d) wherein c and d are integers         independently selected from 1 through 4, and W¹ is selected from         the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S,         C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴),(R¹⁴)NC(S),         OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S, SC(O)N(R¹⁴),         (R¹⁴)NC(O)S, OC(S)N(R¹⁴), (R¹⁴)NC(S)O, N(R¹⁵)C(O)N(R¹⁴),         (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁵), S(O),         S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, Se, Se(O), Se(O)₂,         Se(O)₂N(R¹⁴), N(R¹⁴)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸),         P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴) SiR²⁸R²⁹, and         (CH(R¹⁴))_(e)—W²—(CH(R¹⁵))_(h) wherein e and h are integers         independently selected from 0 through 2 and W² is selected from         the group consisting of CR^(4a)═CR^(4b), ethynylidene (C≡C;         1,2-ethynyl), and C═CR^(4a)R^(4b) with the provisos that R¹⁴ and         R¹⁵ are selected from other than halo and cyano when directly         bonded to N and that (CR³⁷R³⁸)_(b), (CH(R¹⁴))_(c), (CH(R¹⁴))_(e)         and are bonded to E⁰;     -   R³⁷ and R³⁷, when bonded to different carbons, can be taken         together to form a linear moiety spacer having from 1 through 7         contiguous atoms to form a ring selected from the group         consisting of a cycloalkyl ring having from 3 through 8         contiguous members, a cycloalkenyl ring having from 3 through 8         contiguous members, and a heterocyclyl ring having from 3         through 8 contiguous members;     -   R³⁷ and R³⁸, when bonded to different carbons, can be taken         together to form a linear moiety spacer having from 1 through 7         contiguous atoms to form a ring selected from the group         consisting of a cycloalkyl ring having from 3 through 8         contiguous members, a cycloalkenyl ring having from 3 through 8         contiguous members, and a heterocyclyl ring having from 3         through 8 contiguous members;     -   R³⁸ and R³⁸, when bonded to different carbons, can be taken         together to form a linear moiety spacer having from 1 through 7         contiguous atoms to form a ring selected from the group         consisting of a cycloalkyl ring having from 3 through 8         contiguous members, a cycloalkenyl ring having from 3 through 8         contiguous members, and a heterocyclyl ring having from 3         through 8 contiguous members;     -   R³⁷ and R³⁸, when bonded to the same carbon, can be taken         together to form a group selected from a group consisting of         oxo, thiono, alkylene, haloalkylene, and a linear moiety spacer         having from 2 through 7 contiguous atoms to form a ring selected         from the group consisting of a cycloalkyl ring having from 3         through 8 contiguous members, a cycloalkenyl ring having from 3         through 8 contiguous members, and a heterocyclyl ring having         from 3 through 8 contiguous members;     -   Y⁰ can be Q^(b)-Q^(ss) wherein Q^(ss) is selected from the group         consisting of (CR³⁷R³⁸)_(f) wherein f is an integer selected         from 1 through 6, (CH(R¹⁴))_(c)—W¹-(CH(R¹⁵))_(d) wherein c and d         are integers independently selected from 1 through 4, and W¹ is         selected from the group consisting of W¹ is selected from the         group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S,         C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S),         OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S,         SC(O)N(R¹⁴),(R¹⁴)NC(O)S, OC(S)N(R¹⁴),(R¹⁴)NC(S)O,         N(R¹⁵)C(O)N(R¹⁴),(R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴)         (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, Se,         Se(O), Se(O)₂, Se(O)₂N(R¹⁴), N(R¹⁴)Se(O)₂, P(O)(R¹⁴),         N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), SiR²⁸R²⁹, and         (CH(R¹⁴))_(e)—W²—(CH(R¹⁵))_(h) wherein e and h are integers         independently selected from 0 through 2 and W² is selected from         the group consisting of CR^(4a)═CR^(4b), ethynylidene (C≡C;         1,2-ethynyl), and C═CR^(4a)R^(4b) with the provisos that R¹⁴ and         R¹⁵ are selected from other than halo and cyano when directly         bonded to N and that (CR³⁷R³⁸)_(f),(CH(R¹⁵))_(c), and         (CH(R¹⁵))_(e) are bonded to E⁰;     -   Y⁰ can be Q^(b)-Q^(sss) wherein Q^(sss) is (CH(R³⁸))_(r)—W³, r         is an integer selected from 1 through 3, and W³ is selected from         the group consisting of 1,1-cyclopropyl, 1,2-cyclopropyl,         1,1-cyclobutyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl,         1,4-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl,         2,3-morpholinyl, 2,4-morpholinyl, 2,5-morpholinyl,         2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl,         1,2-piperazinyl, 1,3-piperazinyl, 1,4-piperazinyl,         2,3-piperazinyl, 2,5-piperazinyl, 2,6-piperazinyl,         1,2-piperidinyl, 1,3-piperidinyl, 1,4-piperidinyl,         2,3-piperidinyl, 2,4-piperidinyl, 2,5-piperidinyl,         2,6-piperidinyl, 3,4-piperidinyl, 3,5-piperidinyl,         3,6-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl,         2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl,         3,4-pyrrolidinyl, 2H-2,3-pyranyl, 2H-2,4-pyranyl,         2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4 pyranyl, 4H-2,5-pyranyl,         2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl,         4H-pyran-one-2,3-yl, 2,3-tetrahydrofuranyl,         2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl,         3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl, 2,4         tetrahydropyranyl, 2,5-tetrahydropyranyl, 2,6-tetrahydropyranyl,         3,4-tetrahydropyranyl, and 3,5-tetrahydropyranyl with the         proviso that (CH(R³⁸))_(r) is bonded to E⁰ and Q_(b) is bonded         to lowest numbered substituent position of each W³;     -   Y⁰ can be Q^(b)-Q^(sssr) wherein Q^(sssr) is (CH(R³⁸))_(r)—W⁴, r         is an integer selected from 1 through 3, and W⁴ is selected from         the group consisting of 1,2-cyclobutyl, 1,2-cyclohexyl,         1,3-cyclohexyl, 1,4-cyclohexyl, 1,2-cyclopentyl,         1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl,         2,5-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl,         3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl,         1,4-piperazinyl, 2,3-piperazinyl, 2,5-piperazinyl,         2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl,         1,4-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl,         2,5-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl,         3,5-piperidinyl, 3,6-piperidinyl, 1,2-pyrrolidinyl,         1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl,         2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2H-2,3-pyranyl,         2H-2,4-pyranyl, 2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4-pyranyl,         4H-2,5-pyranyl, 2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl,         4H-pyran-one-2,3-yl, 2,3-tetrahydrofuranyl,         2,4-tetrahydrofuranyl, 2,5 tetrahydrofuranyl,         3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl, 2,4         tetrahydropyranyl, 2,5-tetrahydropyranyl, 2,6-tetrahydropyranyl,         3,4-tetrahydropyranyl, and 3,5-tetrahydropyranyl with the         provisos that (CH(R³⁸))_(r) is bonded to E⁰ and Q^(b) is bonded         to highest number substituent position of each W⁴;     -   Y⁰ can be Q^(b)-Q^(ssss) wherein Q^(ssss) is (CH(R³⁸))_(r)—W⁵, r         is an integer selected from 1 through 3, and W⁵ is selected from         the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl,         1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl,         3,4-indenyl, 3, indenyl, 3,6-indenyl, 3,7-indenyl,         2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl,         2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl,         3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl,         2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl,         3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl,         3,7-benzothiophenyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl,         2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl,         1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl,         2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl,         3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl,         2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl,         2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl,         3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl,         1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl,         2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl,         2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl,         2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl,         3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl,         4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl,         1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl,         1,7-isoquinolinyl, 1,8 isoquinolinyl, 3,4-isoquinolinyl,         3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl,         3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl,         4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl,         3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl,         4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and         4,8-cinnolinyl with the proviso that Q^(b) is bonded to lowest         number substituent position of each W⁵ and that (CH(R³⁸))_(r) is         bonded to E⁰;     -   Y⁰ can be Q^(b)-Q^(ssssr) wherein Q^(ssssr) is (CH(R³⁸))_(r)—W⁶,         r is an integer selected from 1 through 3, and W⁶ is selected         from the group consisting of 1,4-indenyl, 1,5-indenyl,         1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl,         2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl,         2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl,         2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl,         3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl,         2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl,         3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl,         3,7-benzothiophenyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl,         2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl,         1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl,         2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl,         3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl,         2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl,         2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl,         3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl,         1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl,         2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl,         2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl,         2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl,         3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl,         4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl,         1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl,         1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl,         3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl,         3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl,         4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl,         3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl,         4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and         4,8-cinnolinyl with the proviso that Q^(b) is bonded to highest         number substituent position of each W⁶ and that (CH(R³⁸))_(r) is         bonded to E₀.

In an embodiment of compounds of Formula I or a pharmaceutically acceptable salt thereof,

-   -   B is formula (V):         wherein D¹, D², J¹, J² and K¹ are independently selected from         the group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, no more         than one of D¹, D², J¹, J² and K¹ can be O, no more than one of         D¹, D², J¹, J² and K¹ can be S, one of D¹, D², J¹, J² and K¹         must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O         and S, and no more than four of D¹, D², J¹, J² and K¹ can be N         with the proviso that R³², R³³, R³⁴, R³⁵, and R³⁶ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   R³², R³³, R³⁴, R³⁵ and R³⁶ can independently be Q^(b);     -   R⁹, R¹⁰, R¹¹, R¹², R¹³, R¹⁶, R¹⁷, R¹⁸, R¹⁹, R³², R³³, R³⁴, R³⁵,         and R³⁶ are independently selected from the group consisting of         hydrido, amidino, guanidino, dialkylsulfonium,         trialkylphosphonium, dialkylsulfoniumalkyl, carboxy,         heteroaralkylthio, heteroaralkoxy, cycloalkylamino, acylalkyl,         acylalkoxy, aryloylalkoxy, heterocyclyloxy, aralkylaryl,         aralkyl, aralkenyl, aralkynyl, heterocyclyl, perhaloaralkyl,         aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl, aralkyl         sulfinylalkyl, halocycloalkyl, halocycloalkenyl,         cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl,         cycloalkylsulfonylalkyl, heteroarylamino,         N-heteroarylamino-N-alkylamino, heteroarylaminoalkyl,         haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl,         haloalkoxylalkyl, heteroaralkoxy, cycloalkoxy, cycloalkenyloxy,         cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl,         cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl,         halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino,         alkoxyamino, thio, nitro, lower alkylamino, alkylthio,         alkylthioalkyl, arylamino, aralkylamino, arylthio,         arylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl,         alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl,         heteroarylsulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl,         alkylsulfonylalkyl, haloalkylsulfinylalkyl,         haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl,         amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl,         monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl,         monoalkyl monoaryl armidosulfonyl, arylsulfinyl, arylsulfonyl,         heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl,         heterocyclylsulfonyl, heterocyclylthio, alkanoyl, alkenoyl,         aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl,         alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky,         alkylenedioxy, haloalkylenedioxy, cycloalkyl,         cycloalkylalkanoyl, cycloalkenyl, lower cycloalkylalkyl, lower         cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy,         hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, aminoalkyl,         hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy,         aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially         saturated heterocyclyl, heteroaryl, heteroaryloxy,         heteroaryloxyalkyl, arylalkyl, heteroarylalkyl, arylalkenyl,         heteroarylalkenyl, carboxyalkyl, carboalkoxy, alkoxycarboxamido,         alkylamidocarbonylamido, arylamidocarbonylamido,         carboalkoxyalkyl, carboalkoxyalkenyl, carboaralkoxy,         carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy,         phosphono, phosphonoalkyl, diaralkoxyphosphono, and         diaralkoxyphosphonoalkyl;     -   R³² and R³³, R³³ and R³⁴, R³⁴ and R³⁵, and R³⁵ and R³⁶ can be         independently selected to form a spacer pair wherein a spacer         pair is taken together to form a linear moiety having from 3         through 6 contiguous atoms connecting the points of bonding of         said spacer pair members to form a ring selected from the group         consisting of a cycloalkenyl ring having 5 through 8 contiguous         members, a partially saturated heterocyclyl ring having 5         through 8 contiguous members, a heteroaryl ring having 5 through         6 contiguous members, and an aryl with the proviso that no more         than one of the group consisting of spacer pairs R³² and R³³,         R³³ and R³⁴, R³⁴ and R³⁵, R³⁵ and and R³⁶ can be used at the         same time;     -   R⁹ and R¹⁰, R¹⁰ and R¹¹, R¹¹ and R¹², and R¹² and R¹³ can be         independently selected to form a spacer pair wherein a spacer         pair is taken together to form a linear moiety having from 3         through 6 contiguous atoms connecting the points of bonding of         said spacer pair members to form a ring selected from the group         consisting of a cycloalkenyl ring having 5 through 8 contiguous         members, a partially saturated heterocyclyl ring having 5         through 8 contiguous members, a heteroaryl ring having 5 through         6 contiguous members, and an aryl with the proviso that no more         than one of the group consisting of spacer pairs R⁹ and R¹⁰, R¹⁰         and R¹¹, R¹¹ and R¹², and R¹² and R¹³ can be used at the same         time;     -   B can be selected from the group consisting of C3-C8 alkyl,         C3-C8 alkenyl, C3-C8 alkynyl, C3-C8 haloalkyl, and C3-C8         haloalkenyl wherein each member of group B may be optionally         substituted at any carbon up to and including 6 atoms from the         point of attachment of B to A with one or more of the group         consisting of R₃₂, R₃₃, R₃₄, R₃₅, and R₃₆;     -   B can be selected from the group consisting of C3-C10         cycloalkyl, C5-C10 cycloalkenyl, C4-C9 saturated heterocyclyl,         and C4-C9 partially saturated heterocyclyl, wherein each ring         carbon may be optionally substituted with R₃₃, a ring carbon         other than the ring carbon at the point of attachment of B to A         may be optionally substituted with oxo provided that no more         than one ring carbon is substituted by oxo at the same time,         ring carbon and nitrogen atoms adjacent to the carbon atom at         the point of attachment may be optionally substituted with R₉ or         R₁₃, a ring carbon or nitrogen atom adjacent to the R₉ position         and two atoms from the point of attachment may be substituted         with R₁₀, a ring carbon or nitrogen atom adjacent to the R₁₃         position and two atoms from the point of attachment may be         substituted with R₁₂, a ring carbon or nitrogen atom three atoms         from the point of attachment and adjacent to the R₁₀ position         may be substituted with R₁₁, a ring carbon or nitrogen atom         three atoms from the point of attachment and adjacent to the R₁₂         position may be substituted with R₃₃, and a ring carbon or         nitrogen atom four atoms from the point of attachment and         adjacent to the R₁₁ and R₃₃ positions may be substituted with         R₃₄;     -   A is selected from the group consisting of single covalent bond,         (W⁷)_(rr)-(CH(R¹⁵))_(pa) and (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr         is an integer selected from 0 through 1, pa is an integer         selected from 0 through 6, and W is selected from the group         consisting of O, S, C(O), C(S), C(O)S, C(S)O, C(O)N(R⁷),         C(S)N(R⁷), (R⁷)NC(O), (R⁷)NC(S), S(O), S(O)₂, S(O)₂N(R⁷),         (R⁷)NS(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), C(NR⁷)N(R⁷),         (R⁷)NC(NR⁷), and N(R⁷);     -   R⁷ and R⁸ are independently selected from the group consisting         of hydrido, hydroxy, alkyl, acyl, aroyl, heteroaroyl, and         alkoxyalkyl;     -   R¹⁴, R¹⁵, R³⁷, and R³⁸ are independently selected from the group         consisting of hydrido, hydroxy, halo, cyano, hydroxyalkyl,         alkoxy, alkyl, alkoxyalkyl, cycloalkyl, cycloalkylalkyl,         cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl,         haloalkoxy, haloalkoxyalkyl, haloalkenyloxyalkyl,         halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxyalkyl,         carboxy, carboxyalkyl, carboalkoxy, carboxamide, and         carboxamidoalkyl;     -   Ψ is selected from the group consisting of NR⁵, O, C(O), C(S),         S, S(O), S(O)₂, ON(R⁵), P(O)(R⁸), and CR³⁹R⁴⁰;     -   R⁵ is selected from the group consisting of hydrido, alkyl,         alkoxy, alkoxyalkyl, haloalkyl, acyl, aroyl, and heteroaroyl;     -   R³⁹ and R⁴⁰ are independently selected from the group consisting         of hydrido, hydroxy, halo, cyano, hydroxyalkyl, acyl, aroyl,         heteroaroyl, acylamido, alkoxy, alkyl, alkoxyalkyl, haloalkyl,         haloalkoxy, haloalkoxyalkyl, alkylsulfonyl, haloalkylsulfonyl,         carboxy, carboxyalkyl, carboalkoxy, carboxamide, and         carboxamidoalkyl;     -   X⁰ and R² are independently selected from the group consisting         of Z⁰-Q, hydrido, alkyl, alkenyl, and halo;     -   X⁰ and R² can be independently selected from the group         consisting of amidino, guanidino, dialkylsulfonium,         trialkylphosphonium, dialkylsulfoniumalkyl, heteroarylamino,         amino, nitro, alkylamino, arylamino, aralkylamino, alkanoyl,         alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl,         haloalkanoyl, hydroxyhaloalkyl, cyano, and phosphono;     -   Z⁰ is selected from the group consisting of covalent single         bond, (CR⁴¹R⁴²)_(q) wherein q is an integer selected from 1         through 6, (CH(R⁴¹))_(g)—W⁰—(CH(R⁴²))_(p) wherein g and p are         integers independently selected from 0 through 3 and W⁰ is         selected from the group consisting of O, S, C(O), C(S), C(O)O,         C(S)O, C(O)S, C(S)S, C(O)N(R⁴¹), (R⁴¹)NC(O), C(S)N(R⁴¹),         (R⁴¹)NC(S), OC(O)N(R⁴¹), (R⁴¹)NC(O)O, SC(S)N(R⁴¹),(R⁴¹)NC(S)S,         SC(O)N(R⁴¹), (R⁴¹)NC(O)S, OC(S)N(R⁴¹), (R⁴¹)NC(S)O,         N(R⁴²)C(O)N(R⁴¹), (R⁴¹)NC(O)N(R⁴²), N(R⁴²)C(S)N(R⁴¹),         (R⁴¹)NC(S)N(R⁴²), S(O), S(O)₂, S(O)₂N(R⁴¹), N(R⁴¹)S(O)₂,         P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁴¹), ON(R⁴¹), and         (CH(R⁴¹))_(e)—W²—(CH(R⁴²))_(h) wherein e and h are integers         independently selected from 0 through 2 and W² is selected from         the group consisting of CR⁴¹═CR⁴², CR⁴¹R⁴²═C; vinylidene), and         ethynylidene (C≡C; 1,2-ethynyl), with the proviso that R⁴¹ and         R⁴² are selected from other than halo and cyano when directly         bonded to N and Z⁰ is directly bonded to the pyrone ring;     -   R⁴¹ and R⁴² are independently selected from the group consisting         of hydrido, hydroxy, halo, cyano, aryloxy, hydroxyalkyl, acyl,         aroyl, heteroaroyl, heteroaryloxyalkyl, alkoxy, alkyl, aryl,         aralkyl, aryloxyalkyl, aralkoxyalkylalkoxy, alkoxyalkyl,         heteroaryloxyalkyl, cycloalkyl, cycloalkylalkyl,         cycloalkylalkenyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl,         haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxy,         haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxy,         halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, saturated         heterocyclyl, partially saturated heterocyclyl, heteroaryl,         heteroaralkyl, heteroarylthioalkyl, heteroaralkylthioalkyl,         alkylsulfonyl, haloalkylsulfonyl, arylsulfonyl,         arylsulfonylalkyl, aralkylsulfonyl, cycloalkylsulfonyl,         cycloalkylsufonylalkyl, heteroarylsulfonylalkyl,         heteroarylsulfonyl, and aralkylsulfonylalkyl;     -   Q is formula (II):         wherein D¹, D², J¹, J² and K¹ are independently selected from         the group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, no more         than one of D¹, D², J¹, J² and K¹ can be O, no more than one of         D¹, D², J¹, J² and K¹ can be S, one of D¹, D², J¹, J² and K¹         must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O         and S, and no more than four of D¹, D², J¹, J² and K¹ can be N,         with the proviso that R⁹, R¹⁰, R¹¹, R¹², and R¹³ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   Q can be formula (III):         wherein D³, D⁴, J³ and J⁴ are independently selected from the         group consisting of C, N, O, and S, no more than one of D³, D⁴,         J³, and J⁴ can be O, no more than one of D³, D⁴, J³, and J⁴ can         be S, and no more than three of D¹, D², J¹, and J² can be N with         the proviso that R⁹, R¹⁰, R¹¹, and R¹² are each independently         selected to maintain the tetravalent nature of carbon, trivalent         nature of nitrogen, the divalent nature of sulfur, and the         divalent nature of oxygen;     -   Q can be selected from the group consisting of alkyl, alkoxy,         alkylamino, alkylthio, haloalkylthio, alkenyl, alkynyl,         saturated heterocyclyl, partially saturated heterocyclyl, acyl,         aroyl, heteroaroyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl,         cycloalkenylalkyl, cycloalkylalkenyl, haloalkyl, haloalkoxy,         haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl,         haloalkenyloxyalkyl, halocycloalkoxyalkyl, and         halocycloalkenyloxyalkyl;     -   K is (CR^(4a)R^(4b))_(n) wherein n is an integer selected from 1         through 2;     -   R^(4a) and R^(4b) are independently selected from the group         consisting of halo, hydrido, hydroxy, cyano, hydroxyalkyl,         alkyl, alkenyl, alkoxyalkyl, haloalkyl, haloalkenyl, and         cyanoalkyl;     -   R^(4a) and R^(4b), when bonded to the same carbon, can be taken         together to form a group selected from the group consisting of         oxo, and a linear spacer moiety having from 2 through 7         contiguous atoms connected to form a ring selected from the         group consisting of a cycloalkyl ring having 3 through 8         contiguous members, a cycloalkenyl ring having 5 through 8         contiguous members, and a heterocyclyl ring having 5 through 8         contiguous members;     -   E⁰ is E¹, when K is (CR^(4a)R^(4b))_(n), wherein E¹ is selected         from the group consisting of a covalent single bond, O, S, C(O),         C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O),         C(S)N(R⁷),(R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷),         (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷),(R⁷)NC(S)O,         N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸),         S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, S(O)₂N(R⁷)C(O),         C(O)N(R⁷)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁷),         ON(R⁷), CR^(4a)═CR^(4b), ethynylidene (C≡C; 1,2-ethynyl), and         C═CR^(4a)R^(4b);     -   K can be (CH(R¹⁴))_(j)-T wherein j is selected from a integer         from 0 through 2 and T is selected from the group consisting of         single covalent bond, O, S, and N(R⁷) with the proviso that         (CH(R¹⁴))_(j) is bonded to the pyrone ring;     -   E⁰ is E², when K is (R¹⁴))_(j)-T, wherein E² is selected from         the group consisting of a covalent single bond, C(O), C(S),         C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷),         (R⁷)NC(S), (R⁷)NC(O)O, (R⁷)NC(S)S, (R⁷)NC(O)S, (R⁷)NC(S)O,         N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁷),         S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, S(O)₂N(H)C(O),         C(O)N(H)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), and         N(R⁷);     -   K can be G-(CH(R¹⁵))_(k) wherein k is selected from an integer         from 1 through 2 and G is selected from the group consisting of         O, S, and N(R⁷) with the proviso that R¹⁵ is other than hydroxy,         cyano, halo, amino, alkylamino, dialkylamino, and sulfhydryl         when k is 1;     -   E⁰ is E³ when K is G-(CH(R¹⁵))_(k) wherein E³ is selected from         the group consisting of a covalent single bond, O, S, C(O),         C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O),         C(S)N(R⁷), (R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷),         (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷), (R⁷)NC(S)O,         N(R⁸)C(O)N(R⁷) (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸),         S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸),         P(O)(R⁸)N(R⁷), N(R⁷), ON(R⁷), CR^(4a)═CR^(4b), ethynylidene         (C≡C; 1,2-ethynyl), and C═CR^(4a)R^(4b);     -   Y⁰ is formula (IV):         wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the         group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, K² is         independently selected from the group consisting of C, and N, no         more than one of D⁵, D⁶, J⁵, and J⁶ can be O, no more than one         of D⁵, D⁶, J⁵, and J⁶ can be S, one of D⁵, D⁶, J⁵, and J⁶ must         be a covalent bond when two of D⁵, D⁶, J⁵, and J⁶ are O and S,         no more than three of D⁵, D⁶, J⁵, and J⁶ can be N when K² is N⁺,         and no more than four of D⁵, D⁶, J⁵, and J⁶ can be N when K² is         carbon with the provisos that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   R¹⁶ and R¹⁷ can be independently taken together to form a linear         moiety spacer having from 3 through 6 contiguous atoms connected         to form a ring selected from the group consisting of a         cycloalkenyl ring having from 5 through 8 contiguous members, a         partially saturated heterocyclyl ring having from 5 through 8         contiguous members, a heteroaryl having from 5 through 6         contiguous members, and an aryl;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹,         ⁺NR²⁰R²¹R²² oxy, alkyl, alkylaminoalkyl, aminoalkyl,         dialkylsulfoniumalkyl, and acylamino wherein R²⁰, R²¹, and R²²         are independently selected from the group consisting of hydrido,         alkyl, hydroxy, alkoxy, alkylamino, dialkylamino, aminoalkyl,         and hydroxyalkyl with the provisos that no more than one of R²⁰,         R²¹, and R²² can be hydroxy, alkoxy, alkylamino, amino, and         dialkylamino and that R²⁰, R²¹, and R²² must be other than be         hydroxy, alkoxy, alkylamino, amino, and dialkylamino when K² is         N⁺;     -   R²⁰ and R²¹, R²⁰ and R²², and R²¹ and R²² can be independently         selected to form a spacer pair wherein a spacer pair is taken         together to form a linear moiety having from 4 through 7         contiguous atoms connecting the points of bonding of said spacer         pair members to form a heterocyclyl ring having 5 through 8         contiguous members with the proviso that no more than one of the         croup consisting of spacer pairs R²⁰ and R²¹, R²⁰ and R²², and         R²¹ and R²² can be used at the same time;     -   Q^(b) can be selected from the group consisting of         N(R²⁶)SO₂N(R²³)(R²⁴), N(R²⁶)C(O)OR⁵, N(R²⁶)C(O)SR⁵,         N(R²⁶)C(S)OR⁵ and N(R²⁶)C(S)SR⁵ with the proviso that no more         than one of R²³, R²⁴, and R²⁶ can be hydroxy, alkoxy,         alkylamino, amino, or dialkylamino when two of the group         consisting of R²³, R²⁴, and R²⁶ are bonded to the same atom;     -   Q^(b) can be selected from the group consisting of         dialkylsulfonium, trialkylphosphonium, C(NR²⁵)NR²³R²⁴,         N(R²⁶)C(NR²⁵R²³)₂₄, N(R²⁶)C(O)N(R²³)(R²⁴),         N(R²⁶)C(S)N(R²³)(R²⁴), C(NR²⁵)OR⁵, C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         C(S)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         N(R²⁶)N(R²⁶)SO₂N(R²³)(R²⁴), C(NR²⁵)SR⁵, C(O)NR²³R²⁴, and         C(O)NR²³R²⁴ with the provisos that no more than one of R²³, R²⁴,         and R²⁶ can be hydroxy, alkoxy, alkylamino, amino, or         dialkylamino when two of the group consisting of R²³, R²⁴, and         R²⁶ are bonded to the same atom and that said Q group is bonded         directly to a carbon atom;     -   R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group         consisting of hydrido, alkyl, hydroxy, alkoxy, alkylamino,         dialkylamino, aminoalkyl, and hydroxyalkyl;     -   R²³ and R²⁴ can be taken together to form a linear spacer moiety         having from 4 through 7 contiguous atoms connecting the points         of bonding to form a heterocyclyl ring having 5 through 8         contiguous members;     -   Q^(s) is selected from the group consisting of a single covalent         bond, (CR³⁷R³⁸)_(b)—(W⁰)_(az) wherein az is an integer selected         from 0 through 1, b is an integer selected from 1 through 4, and         W⁰ is selected from the group consisting of O, S, C(O), C(S),         C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴),         (R¹⁴)NC(S), OC(O)N(R¹⁴), SC(S)N(R¹⁴), SC(O)N(R¹⁴), OC(S)N(R¹⁴),         N(R¹⁵)C(O)N(R¹⁴) (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴),         (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂,         P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴),         (CH(R¹⁴))_(e)—W¹—(CH(R¹⁵))_(d) wherein c and d are integers         independently selected from 1 through 4, and W¹ is selected from         the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S,         C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S),         OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S, SC(O)N(R¹⁴),         (R¹⁴)NC(O)Si OC(S)N(R¹⁴), (R¹⁴)NC(S)O, N(R¹⁵)C(O)N(R¹⁴),         (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁵), S(O),         S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸),         P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), and         (CH(R¹⁴))_(e)—W²—(CH(R¹⁵))_(h) wherein e and h are integers         independently selected from 0 through 2 and W² is selected from         the group consisting of CR^(4a)═CR^(4b), ethynylidene (C≡C;         1,2-ethynyl), and C═CR^(4a)R^(4b) with the provisos that R¹⁴ and         R¹⁵ are selected from other than halo and cyano when directly         bonded to N and that (CR³⁷R³⁸)_(b), (CH(R¹⁴))_(c), (CH(R¹⁴))_(e)         and are bonded to E⁰;     -   Y⁰ can be Q^(b)-Q^(ss) wherein Q^(ss) is selected from the group         consisting of (CR³⁷R³⁸)_(f) wherein f is an integer selected         from 1 through 6, (CH(R¹⁴))_(c)—W¹-(CH(R¹⁵))_(d) wherein c and d         are integers independently selected from 1 through 4, and W¹ is         selected from the group consisting of W¹ is selected from the         group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S,         C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S),         OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S, SC(O)N(R¹⁴),         (R¹⁴)NC(O)S, OC(S)N(R¹⁴), (R¹⁴)NC(S)O, N(R¹⁵)C(O)N(R¹⁴),         (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁵), S(O),         S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸),         P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), and         (CH(R¹⁴))_(e)—W²—(CH(R¹⁵))_(h) wherein e and h are integers         independently selected from 0 through 2 and W² is selected from         the group consisting of CR^(4a)═CR^(4b), ethynylidene (C≡C;         1,2-ethynyl), and C═CR^(4a)R^(4b) with the provisos that R¹⁴ and         R¹⁵ are selected from other than halo and cyano when directly         bonded to N and that (CR³⁷R³⁸)_(f), (CH(R¹⁵))_(c), and         (CH(R¹⁵))_(e) are bonded to E⁰;     -   Y⁰ can be Q^(b)-Q^(sss) wherein Q^(sss) is (CH(R³⁸))_(r)—W³, r         is an integer selected from 1 through 3, and W³ is selected from         the group consisting of 1,1-cyclopropyl, 1,2-cyclopropyl,         1,1-cyclobutyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl,         1,4-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl,         2,3-morpholinyl, 2,4-morpholinyl, 2,5-morpholinyl,         2,6-morpholinyl, 3,4 morpholinyl, 3,5-morpholinyl,         1,2-piperazinyl, 1,3-piperazinyl, 1,4-piperazinyl,         2,3-piperazinyl, 2,5-piperazinyl, 2,6-piperazinyl,         1,2-piperidinyl, 1,3-piperidinyl, 1,4-piperidinyl,         2,3-piperidinyl, 2,4-piperidinyl, 2,5-piperidinyl,         2,6-piperidinyl, 3,4-piperidinyl, 3,5-piperidinyl,         3,6-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl,         2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl,         3,4-pyrrolidinyl, 2H-2,3-pyranyl, 2H-2,4-pyranyl,         2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4 pyranyl, 4H-2,5-pyranyl,         2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl,         4H-pyran-one-2,3-yl, 2,3-tetrahydrofuranyl,         2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl,         3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl,         2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl,         2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and         3,5-tetrahydropyranyl with the proviso that (CH(R³⁸))_(r) is         bonded to E⁰ and Q^(b) is bonded to lowest numbered substituent         position of each W³;     -   Y⁰ can be Q^(b)-Q^(sssr) wherein Q^(sssr) is (CH(R³⁸))_(r)—W⁴, r         is an integer selected from 1 through 3, and W³ is selected from         the group consisting of 1,2-cyclobutyl, 1,2-cyclohexyl,         1,3-cyclohexyl, 1,4-cyclohexyl, 1,2-cyclopentyl,         1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl,         2,5-morpholinyl, 2,5-morpholinyl, 3,4-morpholinyl,         3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl,         1,4-piperazinyl, 2,3-piperazinyl, 2,5-piperazinyl,         2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl,         1,4-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl,         2,5-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl,         3,5-piperidinyl, 3,6-piperidinyl, 1,2-pyrrolidinyl,         1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl,         2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2H-2,3-pyranyl,         2H-2,4-pyranyl, 2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4-pyranyl,         4H-2,5-pyranyl, 2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl,         4H-pyran-one-2,3-yl, 2,3-tetrahydrofuranyl,         2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl,         3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl,         2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl,         2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and         3,5-tetrahydropyranyl with the provisos that (CH(R³⁸))_(r) is         bonded to E⁰ and Q^(b) is bonded to highest number substituent         position of each W⁴;     -   Y⁰ can be Q^(b)-Q^(ssss) wherein Q^(ssss) is (CH(R³⁸))_(r)—W⁵, r         is an integer selected from 1 through 3, and W⁵ is selected from         the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl,         1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl,         3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl,         2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl,         2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl,         3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl,         2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl,         3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl,         3,7-benzothiophenyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl,         2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl,         1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl,         2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl,         3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl,         2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl,         2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl,         3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl,         1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl,         2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl,         2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl,         2,7-quinolinyl, 2,8-quinolinyl, 3,4 quinolinyl, 3,5-quinolinyl,         3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl,         4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl,         1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl,         1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl,         3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl,         3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl,         4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl,         3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl,         4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and         4,8-cinnolinyl with the proviso that Q^(b) is bonded to lowest         number substituent position of each W⁵ and that (CH(R³⁸))_(r) is         bonded to E⁰;     -   Y⁰ can be Q^(b)-Q^(ssssr) wherein Q^(ssssr) is (CH(R³⁸))_(r)—W⁶,         r is an integer selected from 1 through 3, and W⁶ is selected         from the group consisting of 1,4-indenyl, 1,5-indenyl,         1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl,         2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl,         2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl,         2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl,         3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl,         2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl,         3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl,         3,7-benzothiophenyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl,         2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl,         1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl,         2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl,         3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl,         2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl,         2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl,         3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl,         1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl,         2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl,         2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl,         2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl,         3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl,         4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl,         1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl,         1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl,         3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl,         3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl,         4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl,         3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl,         4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and         4,8-cinnolinyl with the proviso that Q^(b) is bonded to highest         number substituent position of each W⁶ and that (CH(R³⁸))_(r) is         bonded to E⁰.

In another embodiment of compounds of Formula I or a pharmaceutically acceptable salt thereof,

-   -   B is formula (V):         wherein D¹, D², J¹, J² and K¹ are independently selected from         the group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, no more         than one of D¹, D², J¹, J² and K¹ can be O, no more than one of         D¹, D², J¹, J² and K¹ can be S, one of D¹, D², J¹, J² and K¹         must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O         and S, and no more than four of D¹, D², J¹, J² and K¹ can be N;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ can independently be Q^(b);     -   R⁹, R¹⁰, R¹¹, R¹², R¹³, R¹⁶, R¹⁷, R¹⁸, R¹⁹, R³², R³³, R³⁴, R³⁵,         and R³⁶ are independently selected from the group consisting of         hydrido, amidino, guanidino, dialkylsulfonium,         trialkylphosphonium, dialkylsulfoniumalkyl, carboxy,         heteroaralkylthio, heteroaralkoxy, cycloalkylamino, acylalkyl,         acylalkoxy, aryloylalkoxy, heterocyclyloxy, aralkylaryl,         aralkyl, aralkenyl, aralkynyl, heterocyclyl, perhaloaralkyl,         aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl,         aralkylsulfinylalkyl, halocycloalkyl, halocycloalkenyl,         cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl,         cycloalkylsulfonylalkyl, heteroarylamino,         N-heteroarylamino-N-alkylamino, heteroarylaminoalkyl,         haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl,         haloalkoxylalkyl, heteroaralkoxy, cycloalkoxy, cycloalkenyloxy,         cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl,         cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl,         halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino,         alkoxyamino, thio, nitro, lower alkylamino, alkylthio,         alkylthioalkyl, arylamino, aralkylamino, arylthio,         alkylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl,         alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl,         heteroarylsulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl,         alkylsulfonylalkyl, haloalkylsulfinylalkyl,         haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl,         amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl,         monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl,         monoalkyl monoaryl amidosulfonyl, arylsulfinyl, arylsulfonyl,         heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl,         heterocyclylsulfonyl, heterocyclylthio, alkanoyl, alkenoyl,         aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl,         alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky,         alkylenedioxy, haloalkylenedioxy, cycloalkyl,         cycloalkylalkanoyl, cycloalkenyl, lower cycloalkylalkyl, lower         cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy,         hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, aminoalkyl,         hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy,         aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially         saturated heterocyclyl, heteroaryl, heteroaryloxy,         heteroaryloxyalkyl, arylalkyl, heteroarylalkyl, arylalkenyl,         heteroarylalkenyl, carboxyalkyl, carboalkoxy, alkoxycarboxamido,         alkylamidocarbonylamido, arylamidocarbonylamido,         carboalkoxyalkyl, carboalkoxyalkenyl, carboaralkoxy,         carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy,         phosphono, phosphonoalkyl, diaralkoxyphosphono, and         diaralkoxyphosphonoalkyl;     -   B can be selected from the group consisting of C3-C8 alkyl,         C3-C8 alkenyl, C3-C8 alkynyl, C3-C8 haloalkyl, and C3-C8         haloalkenyl wherein each member of group B may be optionally         substituted at any carbon up to and including 6 atoms from the         point of attachment of B to A with one or more of the group         consisting of R₃₂, R₃₃, R₃₄, R₃₅, and R₃₆;     -   B can be selected from the group consisting of C3-C10         cycloalkyl, C5-C10 cycloalkenyl, C4-C9 saturated heterocyclyl,         and C4-C9 partially saturated heterocyclyl, wherein each ring         carbon may be optionally substituted with R₃₃, a ring carbon         other than the ring carbon at the point of attachment of B to A         may be optionally substituted with oxo provided that no more         than one ring carbon is substituted by oxo at the same time,         ring carbon and nitrogen atoms adjacent to the carbon atom at         the point of attachment may be optionally substituted with R₉ or         R₁₃, a ring carbon or nitrogen atom adjacent to the R₉ position         and two atoms from the point of attachment may be substituted         with R₁₀, a ring carbon or nitrogen atom adjacent to the R₁₃         position and two atoms from the point of attachment may be         substituted with R₁₂, a ring carbon or nitrogen atom three atoms         from the point of attachment and adjacent to the R₁₀ position         may be substituted with R₁₁, a ring carbon or nitrogen atom         three atoms from the point of attachment and adjacent to the R₁₂         position may be substituted with R₃₃, and a ring carbon or         nitrogen atom four atoms from the point of attachment and         adjacent to the R₁₁ and R₃₃ positions may be substituted with         R₃₄;     -   A is selected from the group consisting of single covalent bond,         (W⁷)_(rr)-(CH(R¹⁵))_(pa) and (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr         is an integer selected from 0 through 1, pa is an integer         selected from 0 through 6, and W⁷ is selected from the group         consisting of O, S, C(O), C(S), C(O)S, C(S)O, C(O)N(R⁷),         C(S)N(R⁷), (R⁷)NC(O), (R⁷)NC(S), S(O), S(O)₂, S(O)₂N(R⁷),         (R⁷)NS(O)₂, C(NR⁷)N(R⁷), (R⁷)NC(NR⁷), and N(R⁷);     -   R⁷ and R⁸ are independently selected from the group consisting         of hydrido, hydroxy, alkyl, and alkoxyalkyl;     -   R¹⁴, R¹⁵, R³⁷, and R³⁸ are independently selected from the group         consisting of hydrido, hydroxy, halo, alkyl, alkoxyalkyl,         haloalkyl, haloalkoxy, and haloalkoxyalkyl;     -   Ψ is selected from the group consisting of NR⁵, O, C(O), C(S),         S, S(O), S(O)₂, and CR³⁹R⁴⁰;     -   R⁵ is selected from the group consisting of hydrido, alkyl, and         alkoxy;     -   R³⁹ and R⁴⁰ are independently selected from the group consisting         of hydrido, hydroxy, halo, hydroxyalkyl, alkyl, alkoxyalkyl,         haloalkyl, haloalkoxy, and haloalkoxyalkyl;     -   X⁰ and R² are independently selected from the group consisting         of Z⁰-Q, hydrido, alkyl, alkenyl, and halo;     -   X⁰ and R² can be independently selected from the group         consisting of amidino, guanidino, dialkylsulfonium,         trialkylphosphonium, dialkylsulfoniumalkyl, heteroarylamino,         amino, nitro, alkylamino, arylamino, aralkylamino, alkanoyl,         alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl,         haloalkanoyl, hydroxyhaloalkyl, cyano, and phosphono;     -   Z⁰ is selected from the group consisting of covalent single         bond, (CR⁴¹R⁴²)_(q) wherein q is an integer selected from 1         through 2, (CH(R⁴¹))_(g)W⁰—(CH(R⁴²))_(p) wherein g and p are         integers independently selected from 0 through 2 and W⁰ is         selected from the group consisting of O, S, C(O), C(S), C(O)O,         C(S)O, C(O)S, C(S)S, C(O)N(R⁴¹), (R⁴¹)NC(O), C(S)N(R⁴¹),         (R⁴¹)NC(S), OC(O)N(R⁴¹), (R⁴¹)NC(O)O, SC(S)N(R⁴¹), (R⁴¹)NC(S)S,         SC(O)N(R⁴¹), (R⁴¹)NC(O)S, OC(S)N(R⁴¹), (R⁴¹)NC(S)O,         N(R⁴²)C(O)N(R⁴¹), (R⁴¹)NC(O)N(R⁴²), N(R⁴²)C(S)N(R⁴¹),         (R⁴¹)NC(S)N(R⁴²), S(O), S(O)₂, S(O)₂—N(R⁴¹), N(R⁴¹)S(O)₂,         N(R⁴¹), ON(R⁴¹), and (CH(R⁴¹))_(e)—W²—(CH(R⁴²))_(h) wherein e         and h are integers independently selected from 0 through 2 and         W² is selected from the group consisting of CR⁴¹═CR⁴²,         CR⁴¹—R⁴²═C; vinylidene), and ethynylidene (C≡C; 1,2-ethynyl),         with the proviso that R⁴¹ and R⁴² are selected from other than         halo and cyano when directly bonded to N and Z⁰ is directly         bonded to the pyrone ring;     -   R⁴¹ and R⁴² are independently selected from the group consisting         of hydrido, hydroxy, halo, cyano, aryloxy, hydroxyalkyl, acyl,         aroyl, heteroaroyl, heteroaryloxyalkyl, alkoxy, alkyl, aryl,         aralkyl, aryloxyalkyl, aralkoxyalkylalkoxy, alkoxyalkyl,         heteroaryloxyalkyl, cycloalkyl, cycloalkylalkyl,         cycloalkylalkenyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl,         haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxy,         haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxy,         halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, saturated         heterocyclyl, partially saturated heterocyclyl, heteroaryl, and         heteroaralkyl;     -   Q is formula (II):         wherein D¹, D², J¹, J² and K¹ are independently selected from         the group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, no more         than one of D¹, D², J¹, J² and K¹ can be O, no more than one of         D¹, D², J¹, J² and K¹ can be S, one of D¹, D², J¹, J² and K¹         must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O         and S, and no more than four of D¹, D², J¹, J² and K¹ can be N,         with the proviso that R⁹, R¹⁰, R¹¹, R¹², and R¹³ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   Q can be selected from the group consisting of alkyl, alkoxy,         alkylamino, alkylthio, haloalkylthio, saturated heterocyclyl,         alkyl, partially saturated heterocyclyl, acyl, aroyl,         heteroaroyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl,         cycloalkenylalkyl, cycloalkylalkenyl, haloalkyl, haloalkoxy,         haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl,         haloalkenyloxyalkyl, halocycloalkoxyalkyl, and         halocycloalkenyloxyalkyl;     -   K is (CR^(4a)R^(4b))_(n) wherein n is the integer 1;     -   R^(4a) and R^(4b) are independently selected from the group         consisting of halo, hydrido, hydroxy, hydroxyalkyl, alkyl,         alkoxyalkyl, and haloalkyl;     -   E⁰ is E¹, when K is (CR^(4a)R^(4b))_(n), wherein E¹ is selected         from the group consisting of a covalent single bond, O, S, C(O),         C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O),         C(S)N(R⁷), (R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷),         (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷), (R⁷)NC(S)O,         N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸),         S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, S(O)₂N(R⁷)C(O),         C(O)N(R⁷)S(O)₂, N(R⁷), ON(R⁷), CR^(4a)═CR^(4b) ethynylidene         (C≡C; 1,2-ethynyl), and C═CR^(4a)R^(4b);     -   K can be (CH(R¹⁴))_(j)-T wherein j is selected from a integer         from 0 through 1 and T is selected from the group consisting of         single covalent bond, O, S, and N(R⁷) with the proviso that         (CH(R¹⁴))_(j) is bonded to the pyrone ring;     -   E⁰ is E², when K is(CH 14))_(j)-T, wherein E² is selected from         the group consisting of a covalent single bond, C(O), C(S),         C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷),         (R⁷)NC(S), (R⁷)NC(O)O, (R⁷)NC(S)S, (R⁷)NC(O)S, (R⁷)NC(S)O,         N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸),         S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, S(O)₂N(H)C(O),         C(O)N(H)S(O)₂, and N(R⁷);     -   K can be G-(CH(R¹⁵))_(k) wherein k is the integer 1 and G is         selected from the group consisting of O, S, and N(R⁷);

E⁰ is E³ when K is G-(CH(R¹⁵))_(k) wherein E³ is selected from the group consisting of a covalent single bond, O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷),(R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷), (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷), (R⁷)NC(S)O, N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸), S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, N(R⁷), ON(R⁷), CR^(4a)═CR^(4b) ethynylidene (C≡C; 1,2-ethynyl), and C═CR^(4a)R^(4b);

-   -   Y⁰ is formula (IV):         wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the         group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, K² is         independently selected from the group consisting of C, and N⁺,         no more than one of D⁵, D⁶, J⁵ and J⁶ can be O, no more than one         of D⁵, D⁶, J⁵, and J⁶ can be S, one of D⁵, D⁶, J⁵, and J⁶ must         be a covalent bond when two of D⁵, D⁶, J⁵, and J⁶ are O and S,         no more than three of D⁵, D⁶, J⁵, and J⁶ can be N when K² is N⁺,         and no more than four of D⁵, D⁶, J⁵ and J⁶ can be N when K² is         carbon with the provisos that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹,         ⁺NR²⁰R²¹R²², oxy, alkyl, alkylaminoalkyl, aminoalkyl,         dialkylsulfoniumalkyl, and acylamino wherein R²⁰, R²¹, and R²²         are independently selected from the group consisting of hydrido,         alkyl, hydroxy, alkoxy, alkylamino, dialkylamino, aminoalkyl,         and hydroxyalkyl with the provisos that no more than one of R²⁰,         R²¹, and R²² can be hydroxy, alkoxy, alkylamino, amino, and         dialkylamino and that R²⁰, R²¹, and R²² must be other than be         hydroxy, alkoxy, alkylamino, amino, and dialkylamino when K² is         N⁺;     -   Q^(b) can be selected from the group consisting of         N(R²⁶)SO₂N(R²³)(R²⁴), N(R²⁶)C(O)OR⁵, N(R²⁶)C(O)SR⁵,         N(R²⁶)C(S)OR⁵ and N(R²⁶)C(S)SR⁵ with the proviso that no more         than one of R²³, R²⁴, and R²⁶ can be hydroxy, alkoxy,         alkylamino, amino, or dialkylamino when two of the group         consisting of R²³, R²⁴, and R²⁶ are bonded to the same atom;     -   Q^(b) can be selected from the group consisting of         dialkylsulfonium, trialkylphosphonium, C(NR²⁵)NR²³R²⁴,         N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)C(O)N(R²³)(R²⁴),         N(R²⁶)C(S)N(R²³)(R²⁴), C(NR²⁵)OR⁵, C(O)N(R²⁶ (NR²⁵)N(R²³)(R²⁴),         C(S)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         N(R²⁶)N(R²⁶)SO₂N(R²³)(R²), C(NR²⁵)SR⁵, C(O)NR²³R²⁴, and         C(O)NR²³R²⁴ with the provisos that no more than one of R²³, R²⁴,         and R²⁶ can be hydroxy, alkoxy, alkylamino, amino, or         dialkylamino when two of the group consisting of R²³, R²⁴, and         R²⁶ are bonded to the same atom and that said Q group is bonded         directly to a carbon atom;     -   R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group         consisting of hydrido, alkyl, hydroxy, alkoxy, alkylamino,         dialkylamino, aminoalkyl, and hydroxyalkyl;     -   Q^(s) is selected from the group consisting of a single covalent         bond, (CR³⁷R³⁸)_(b)—(W⁰)_(az) wherein az is an integer selected         from 0 through 1, b is an integer selected from 1 through 2, and         W⁰ is selected from the group consisting of O, S, C(O), C(S),         C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴),         (R¹⁴)NC(S), OC(O)N(R¹⁴), SC(S)N(R¹⁴), SC(O)N(R¹⁴), OC(S)N(R¹⁴),         N(R¹⁵)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴),         (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, N(R¹⁴),         ON(R¹⁴), and (CH(R¹⁴))_(c)—W¹—(CH(R¹⁵))_(d) wherein c and d are         integers independently selected from 1 through 2, and W¹ is         selected from the group consisting of O, S, C(O), C(S), C(O)O,         C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴),         (R¹⁴)NC(S), OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S,         SC(O)N(R¹⁴), (R¹⁴)NC(O)S, OC(S)N(R¹⁴), (R¹⁴)NC(S)O,         N(R¹⁵)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴),         (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, N(R¹⁴),         ON(R¹⁴), and (CH(R¹⁴))_(e)—W²—(CH(R²))_(h) wherein e and h are         integers independently selected from 0 through 2 and W² is         selected from the group consisting of CR^(4a)═CR^(4b),         ethynylidene (C≡C; 1,2-ethynyl), and C═CR^(4a)R^(4b) with the         provisos that R¹⁴ and R¹⁵ are selected from other than halo and         cyano when directly bonded to N and that (CR³⁷R³⁸)_(b),         (CH(R¹⁴))_(c), (CH(R¹⁴))_(e) and are bonded to E⁰;     -   Y⁰ can be Q^(b)-Q^(ss) wherein Q is selected from the group         consisting of (CR³⁷R³⁸)_(f) wherein f is an integer selected         from 1 through 4, (CH(R¹⁴))_(c)—W¹-(CH(R¹⁵))_(d) wherein c and d         are integers independently selected from 1 through 2, and W¹ is         selected from the group consisting of W¹ is selected from the         group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S,         C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S),         OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴),(R¹⁴)NC(S)S,         SC(O)N(R¹⁴),(R¹⁴)NC(O)S, OC(S)N(R¹⁴), (R¹⁴)NC(S)O,         N(R¹⁵)C(O)N(R¹⁴) (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴),         (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, N(R¹⁴),         ON(R¹⁴), and (CH(R¹⁴))_(e)—W²—(CH(R¹⁵))_(h) wherein e and h are         integers independently selected from 0 through 2 and W² is         selected from the group consisting of CR^(4a)═CR^(4b),         ethynylidene (C≡C; 1,2-ethynyl), and C═CR^(4a)R^(4b) with the         provisos that R¹⁴ and R¹⁵ are selected from other than halo when         directly bonded to N and that (CR³⁷R³⁸)_(f), (CH(R¹⁵))_(c), and         (CH(R¹⁵))_(e) are bonded to E⁰;     -   Y⁰ can be Q^(b)-Q^(sss) wherein Q^(sss) is (CH(R³⁸))_(r)—W³, r         is an integer selected from 1 through 2, and W³ is selected from         the group consisting of 1,1-cyclopropyl, 1,2-cyclopropyl,         1,2-cyclobutyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl,         1,4-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl,         2,3-morpholinyl, 2,4-morpholinyl, 2,5-morpholinyl,         2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl,         1,2-piperazinyl, 1,3-piperazinyl, 1,4-piperazinyl,         2,3-piperazinyl, 2,5-piperazinyl, 2,6-piperazinyl,         1,2-piperidinyl, 1,3-piperidinyl, 1,4-piperidinyl,         2,3-piperidinyl, 2,4-piperidinyl, 2,5-piperidinyl,         2,6-piperidinyl, 3,4-piperidinyl, 3,5-piperidinyl,         3,6-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl,         2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl,         3,4-pyrrolidinyl, 2H-2,3-pyranyl, 2H-2,4-pyranyl,         2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4 pyranyl, 4H-2,5-pyranyl,         2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl,         4H-pyran-one-2,3-yl, 2,3-tetrahydrofuranyl,         2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl,         3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl,         2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl,         2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and         3,5-tetrahydropyranyl with the proviso that (CH(R³⁸))_(r) is         bonded to E⁰ and Q^(b) is bonded to lowest numbered substituent         position of each W³;     -   Y⁰ can be Q^(b)-Q^(sssr) wherein Q^(sssr) is (CH(R³⁸))_(r)—W⁴, r         is an integer selected from 1 through 2, and W⁴ is selected from         the group consisting of 1,2-cyclobutyl, 1,2-cyclohexyl,         1,3-cyclohexyl, 1,4-cyclohexyl, 1,2-cyclopentyl,         1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl,         2,5-morpholinyl, 2,5-& morpholinyl, 3,4-morpholinyl,         3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl,         1,4-piperazinyl, 2,3-piperazinyl, 2,5-piperazinyl,         2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl,         1,4-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl,         2,5-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 3         piperidinyl, 3,6-piperidinyl, 1,2-pyrrolidinyl,         1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl,         2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2H-2,3-pyranyl,         2H-2,4-pyranyl, 2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4-pyranyl,         4H-2,5-pyranyl, 2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl,         4H-pyran-4-one-2,3-yl, 2,3-tetrahydrofuranyl,         2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl,         3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl,         2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl,         2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and         3,5-tetrahydropyranyl with the provisos that (CH(R³⁸))_(r) is         bonded to E⁰ and Q^(b) is bonded to highest number substituent         position of each W⁴;     -   Y⁰ can be Q^(b)-Q^(ssss) wherein Q^(ssss) is (CH(R³⁸))_(r)—W⁵, r         is an integer selected from 1 through 2, and W⁵ is selected from         the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl,         1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl,         3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl,         2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl,         2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl,         3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl,         2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl,         3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl,         3,7-benzothiophenyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl,         2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl,         1,4-isoindolyl, 1,5 isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl,         2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl,         3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl,         2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl,         2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl,         3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl,         1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl,         2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl,         2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl,         2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl,         3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl,         4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl,         1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6 isoquinolinyl,         1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl,         3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl,         3,8-isoquinolinyl, 4,5 isoquinolinyl, 4,6-isoquinolinyl,         4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl,         3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl,         4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and         4,8-cinnolinyl with the proviso that Q^(b) is bonded to lowest         number substituent position of each W⁵ and that (CH(R⁵))_(r) is         bonded to E⁰;     -   Y⁰ can be Q^(b)-Q^(ssssr) wherein Q^(ssssr) is (CH(R³⁸))_(r)—W⁶,         r is an integer selected from 1 through 2, and W⁶ is selected         from the group consisting of 1,4-indenyl, 1,5-indenyl,         1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl,         2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl,         2,4-benzofuranyl, 2,5-benzofuranyl, 2,5-benzofuranyl,         2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl,         3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl,         2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl,         3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl,         3,7-benzothiophenyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl,         2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl,         1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl,         2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl,         3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl,         2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl,         2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3, benzisoxazolyl,         3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl,         1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl,         2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl,         2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl,         2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl,         3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl,         4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4         isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl,         1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl,         3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl,         3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl,         4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl,         3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl,         4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and         4,8-cinnolinyl with the proviso that Q^(b) is bonded to highest         number substituent position of each W⁶ and that (CH(R³⁸))_(r) is         bonded to E⁰.

In a preferred embodiment of compounds of Formula I or a pharmaceutically acceptable salt thereof,

-   -   B is formula (V):         wherein D¹, D², J¹, J² and K¹ are independently selected from         the group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, no more         than one of D¹, D², J¹, J² and K¹ can be O, no more than one of         D¹, D², J¹, J² and K¹ can be S, one of D¹, D², J¹, J² and K¹         must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O         and S, and no more than four of D¹, D², J¹, J² and K¹ can be N;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ can independently be Q^(b);     -   R⁹, R¹⁰, R¹¹, R¹², R¹³, R³², R³³, R³⁴, R³⁵, and R³⁶ are         independently selected from the group consisting of hydrido,         amidino, guanidino, dialkylsulfonium, carboxy, haloalkylthio,         alkanoyloxy, alkoxy, alkoxyalkyl, haloalkoxylalkyl, hydroxy,         amino, alkoxyamino, thio, nitro, lower alkylamino, alkylthio,         alkylthioalkyl, alkylsulfinyl, alkylsulfinylalkyl,         alkylsulfonyl, alkylsulfonylalkyl, haloalkylsulfinylalkyl,         haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl,         amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl,         alkanoyl, alkenoyl, haloalkanoyl, alkyl, alkenyl, alkenyloxy,         alkenyloxyalky, halo, haloalkyl, haloalkenyl, haloalkoxy,         hydroxyhaloalkyl, hydroxyalkyl, aminoalkyl, haloalkoxyalkyl,         carboxyalkyl, carboalkoxy, alkoxycarboxamido,         alkylamidocarbonylamido, carboalkoxyalkyl, carboalkoxyalkenyl,         carboxamido, carboxamidoalkyl, and cyano;     -   B can be selected from the group consisting of C3-C8 alkyl,         C3-C8 alkenyl, C3-C8 alkynyl, C3-C8 haloalkyl, and C3-C8         haloalkenyl wherein each member of group B may be optionally         substituted at any carbon up to and including 6 atoms from the         point of attachment of B to A with one or more of the group         consisting of R₃₂, R₃₃, R₃₄, R₃₅, and R₃₆;     -   B can be selected from the group consisting of C3-C10         cycloalkyl, C5-C10 cycloalkenyl, C4-C9 saturated heterocyclyl,         and C4-C9 partially saturated heterocyclyl, wherein each ring         carbon may be optionally substituted with R₃₃, a ring carbon         other than the ring carbon at the point of attachment of B to A         may be optionally substituted with oxo provided that no more         than one ring carbon is substituted by oxo at the same time,         ring carbon and nitrogen atoms adjacent to the carbon atom at         the point of attachment may be optionally substituted with R₉ or         R₁₃, a ring carbon or nitrogen atom adjacent to the R₉ position         and two atoms from the point of attachment may be substituted         with R₁₀, a ring carbon or nitrogen atom adjacent to the R₁₃         position and two atoms from the point of attachment may be         substituted with R₁₂, a ring carbon or nitrogen atom three atoms         from the point of attachment and adjacent to the R₁₀ position         may be substituted with R₁₁, a ring carbon or nitrogen atom         three atoms from the point of attachment and adjacent to the R₁₂         position may be substituted with R₃₃, and a ring carbon or         nitrogen atom four atoms from the point of attachment and         adjacent to the R₁₁ and R₃₃ positions may be substituted with         R₃₄;     -   A is selected from the group consisting of single covalent bond,         (W⁷)_(rr)-(CH(R¹⁵))_(pa) and (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr         is an integer selected from 0 through 1, pa is an integer         selected from 0 through 6, and W⁷ is selected from the group         consisting of O, S, C(O), C(S), C(O)S, C(S)O, C(O)N(R⁷),         C(S)N(R⁷), (R⁷)NC(O), (R⁷)NC(S), S(O), S(O)₂, S(O)₂N(R⁷),         (R⁷)NS(O)₂, C(NR⁷)N(R⁷), (R⁷)NC(NR⁷), and N(R⁷);     -   R⁷ and R⁸ are independently selected from the group consisting         of hydrido, hydroxy, alkyl, and alkoxyalkyl;     -   R¹⁵ is selected from the group consisting of hydrido, hydroxy,         halo, alkyl, and haloalkyl;     -   Ψ is NH;     -   X⁰ is hydrido;     -   R² is selected from the group consisting of Z⁰-Q, hydrido,         alkyl, alkenyl, and halo;     -   Z⁰ is a covalent single bond;     -   Q is formula (II):         wherein D¹, D², J¹, J² and K¹ are independently selected from         the group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, no more         than one of D¹, D², J¹, J² and K¹ can be O, no more than one of         D¹, D², J¹, J² and K¹ can be S, one of D¹, D², J¹, J² and K¹         must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O         and S, and no more than four of D¹, D², J¹, J² and K¹ can be N,         with the proviso that R⁹, R¹⁰, R¹¹, R¹², and R¹³ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   K is CR^(4a)R^(4b);     -   R^(4a) and R^(4b) are independently selected from the group         consisting of halo, hydrido, hydroxy, alkyl, and haloalkyl;     -   E⁰ is E¹ when K is CR^(4a)R^(4b), wherein E¹ is selected from         the group consisting of a covalent single bond, (O)N(H),         (H)NC(O), C(S)N(H), (H)NC(S), S(O)₂N(H), N(H)S(O)₂,         S(O)₂N(H)C(O), and C(O)N(H)S(O)₂;     -   K can be (CH(R¹⁴))_(j)-T wherein j is selected from an integer         from 0 through 1 and T is selected from the group consisting of         single covalent bond and N(R⁷) with the proviso that         (CH(R¹⁴))_(j) is bonded to the pyrone ring;     -   E⁰ is E², when K is (CH(R¹⁴))_(j)-T, wherein E² is selected from         the group consisting of C(C)N(H), (H)NC(O). C(S)N(H), (H)NC(S),         S( )₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and C(O)N(H)S(O)₂;     -   R¹⁴ is selected from the group consisting of hydrido, halo,         alkyl, and haloalkyl;     -   Y⁰ is formula (IV):         wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the         group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, K² is         independently selected from the group consisting of C, and N⁺,         no more than one of D⁵, D⁶, J⁵, and J⁶ can be O, no more than         one of D⁵, D⁶, J⁵, and J⁶ can be S, one of D⁵, D⁶, J⁵ and J⁶         must be a covalent bond when two of D⁵, D⁵, J⁵, and J⁶ are O and         S, no more than three of D⁵, D⁶, J⁵, and J⁶ can be N when K² is         N⁺, and no more than four of D⁵, D⁶, J⁵, and J⁶ can be N when K²         is carbon with the provisos that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, dialkylsulfonium,         carboxy, haloalkylthio, alkoxy, hydroxy, amino, thio, nitro,         lower alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl,         alkanoyl, alkenoyl, haloalkanoyl, alkyl, alkenyl, halo,         haloalkyl, haloalkenyl, haloalkoxy, hydroxyalkyl, aminoalkyl,         haloalkoxyalkyl, carboalkoxy, carboalkoxyalkyl, and cyano;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹,         ⁺NR²⁰R²¹R²², oxy, alkyl, alkylaminoalkyl, aminoalkyl,         dialkylsulfoniumalkyl, and acylamino wherein R²⁰, R²¹, and R²²         are independently selected from the group consisting of hydrido,         alkyl, hydroxy, alkoxy, alkylamino, dialkylamino, aminoalkyl,         and hydroxyalkyl with the provisos that no more than one of R²⁰,         R²¹, and R²² can be hydroxy, alkoxy, alkylamino, amino, and         dialkylamino and that R²⁰, R²¹, and R²² must be other than be         hydroxy, alkoxy, alkylamino, amino, and dialkylamino when K² is         N⁺;     -   Q^(b) can be N(R²⁶)SO₂N(R²³)(R²⁴) with the proviso that no more         than one of R²³, R²⁴, and R²⁶ can be hydroxy, alkoxy,         alkylamino, amino, or dialkylamino when two of the group         consisting of R²³, R²⁴, and R²⁶ are bonded to the same atom;     -   Q^(b) can be selected from the group consisting of         dialkylsulfonium, trialkylphosphonium, C(NR²⁵)NR²³R²⁴,         N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)C(O)N(R²³)(R²⁴),         N(R²⁶)C(S)N(R²³)(R²⁴), C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         C(S)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         N(R²⁶)N(R²⁶)SO₂N(R²³)(R²⁴), C(O)NR²³R²⁴, and C(O)NR²³R²⁴ with         the provisos that no more than one of R²³, R²⁴, and R²⁶ can be         hydroxy, alkoxy, alkylamino, amino, or dialkylamino when two of         the group consisting of R²³, R²⁴, and R²⁶ are bonded to the same         atom and that said Q^(b) group is bonded directly to a carbon         atom;     -   R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group         consisting of hydrido, alkyl, hydroxy, alkoxy, alkylamino,         dialkylamino, aminoalkyl, and hydroxyalkyl;     -   Q^(s) is selected from the group consisting of a single covalent         bond and (CR³⁷R³⁸)_(b)-(W⁰)_(az) wherein az is an integer         selected from 0 through 1, b is an integer selected from 1         through 2, and W₀ is selected from the group consisting of O, S,         C(O), S(O)₂, N(R¹⁴), and ON(R¹⁴) with the proviso that R¹⁴ is         selected from other than halo when directly bonded to N and that         (CR³⁷R³⁸)_(b) is bonded to E⁰;     -   R³⁷ and R³⁸ are independently selected from the group consisting         of hydrido, halo, alkyl, and haloalkyl;     -   Y⁰ can be Q^(b)-Q^(ssss) wherein Q^(ssss) is (CH(R³⁸))_(r)—W⁵, r         is an integer selected from 1 through 2, and W⁵ is selected from         the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl,         1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl,         3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl,         2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl,         2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl,         3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl,         2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl,         3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl,         3,7-benzothiophenyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl,         2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl,         1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl,         2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl,         3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl,         2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl,         2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl,         3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl,         1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl,         2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl,         2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl,         2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl,         3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl,         4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl,         1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl,         1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl,         3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl,         3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl,         4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl,         3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl,         4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and         4,8-cinnolinyl with the proviso that Q^(b) is bonded to lowest         number substituent position of each W⁵ and that (CH(R³⁸))_(r) is         bonded to E⁰;     -   Y⁰ can be Q^(b)-Q^(ssssr) wherein Q^(ssssr) is (CH(R³⁸))_(r)—W⁶,         r is an integer selected from 1 through 2, and W⁶ is selected         from the group consisting of 1,4-indenyl, 1,5-indenyl,         1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl,         2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl,         2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl,         2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl,         3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl,         2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl,         3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl,         3,7-benzothiophenyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl,         2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl,         1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl,         2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl,         3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl,         2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl,         2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl,         3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl,         1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl,         2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl,         2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl,         2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl,         3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl,         4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4         isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl,         1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl, 3,5         isoquinolinyl, 3,6 isoquinolinyl, 3,7-isoquinolinyl,         3,8-isoquinolinyl, 4,5 isoquinolinyl, 4,6 isoquinolinyl,         4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl,         3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl,         4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and         4,8-cinnolinyl with the proviso that Q^(b) is bonded to highest         number substituent position of each W⁶ and that (CH(R³⁸))_(r) is         bonded to E⁰.

In a more preferred embodiment of compounds of Formula I or a pharmaceutically acceptable salt thereof,

-   -   B is selected from the group consisting of aryl and heteroaryl         wherein a carbon adjacent to the carbon at the point of         attachment may be substituted by R³², the other carbon adjacent         to the carbon at the point of attachment may be substituted by         R³⁶, a carbon adjacent to R³² and two atoms from the carbon at         the point of attachment may be substituted by R³³, a carbon         adjacent to R³⁶ and two atoms from the carbon at the point of         attachment may be substituted by R³⁵, and any carbon adjacent to         both R³³ and R³⁵ may be substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, amidino, guanidino,         dialkylsulfonium, carboxy, haloalkylthio, alkoxy, hydroxy,         amino, alkoxyamino, thio, nitro, lower alkylamino, alkylthio,         alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkanoyl,         haloalkanoyl, alkyl, halo, haloalkyl, haloalkenyl, haloalkoxy,         hydroxyhaloalkyl, hydroxyalkyl, aminoalkyl, carboxyalkyl,         carboalkoxy, carboxamido, and cyano;     -   R³², R³³, R³⁴, R³⁵ and R³⁶ can independently be Q^(b);     -   B can be selected from the group consisting of C3-C8 alkyl,         C3-C8 alkenyl, C3-C8 haloalkyl, and C3-C8 haloalkenyl wherein         each member of group B may be optionally substituted at any         carbon up to and including 6 atoms from the point of attachment         of B to A with one or more of the group consisting of R₃₂, R₃₃,         R₃₄, R₃₅, and R₃₆;     -   B can be selected from the group consisting of C3-C10         cycloalkyl, C5-C10 cycloalkenyl, C4-C9 saturated heterocyclyl,         and C4-C9 partially saturated heterocyclyl, wherein each ring         carbon may be optionally substituted with R₃₃, a ring carbon         other than the ring carbon at the point of attachment of B to A         may be optionally substituted with oxo provided that no more         than one ring carbon is substituted by oxo at the same time,         ring carbon and nitrogen atoms adjacent to the carbon atom at         the point of attachment may be optionally substituted with R₉ or         R₁₃, a ring carbon or nitrogen atom adjacent to the R₉ position         and two atoms from the point of attachment may be substituted         with R₁₀, amino carbon or nitrogen atom adjacent to the R₁₃         position and two atoms from the point of attachment may be         substituted with R₁₂, a ring carbon or nitrogen atom three atoms         from the point of attachment and adjacent to the R₁₀ position         may be substituted with R₁₁, a ring carbon or nitrogen atom         three atoms from the point of attachment and adjacent to the R₁₂         position may be substituted with R₃₃, and a ring carbon or         nitrogen atom four atoms from the point of attachment and         adjacent to the R₁₁ and R₃₃ positions may be substituted with         R₃₄;     -   R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the         group consisting of hydrido, amidino, guanidino,         dialkylsulfonium, carboxy, haloalkylthio, alkoxy, hydroxy,         amino, alkoxyamino, thio, nitro, lower alkylamino, alkylthio,         alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkanoyl,         haloalkanoyl, alkyl, halo, haloalkyl, haloalkenyl, haloalkoxy,         hydroxyhaloalkyl, hydroxyalkyl, aminoalkyl, carboxyalkyl,         carboalkoxy, carboxamido, and cyano;     -   A is selected from the group consisting of single covalent bond,         (W⁷)_(rr)-(CH(R¹⁵))_(pa) and (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr         is an integer selected from 0 through 1, pa is an integer         selected from 0 through 6, and W⁷ is selected from the group         consisting of O, S, and C(O);     -   R¹⁵ is selected from the group consisting of hydrido, hydroxy,         halo, alkyl, and haloalkyl;     -   Ψ is NH;     -   X⁰ is hydrido;     -   R² is Q, wherein Q is selected from the group consisting of aryl         and heteroaryl wherein a carbon adjacent to the carbon at the         point of attachment may be substituted by R⁹, the other carbon         adjacent to the carbon at the point of attachment may be         substituted by R¹³, a carbon adjacent to R⁹ and two atoms from         the carbon at the point of attachment may be substituted by R¹⁰,         a carbon adjacent to R¹³ and two atoms from the carbon at the         point of attachment may be substituted by R¹², and any carbon         adjacent to both R¹⁰ and R¹² may be substituted by R¹¹;     -   K is CR^(4a)R^(4b) wherein R^(4a) and R^(4b) are independently         selected from the group consisting of halo and hydrido;     -   E⁰ is E¹, when K is CR^(4a)R^(4b), wherein E¹ is selected from         the group consisting of a covalent single bond, (O)N(H),         (H)NC(O), S(O)₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and         C(O)N(H)S(O)₂;     -   K can be (CH(R¹⁴))_(j)-T wherein j is selected from an integer         from 0 through 1 and T is selected from the group consisting of         single covalent bond and N(R⁷) with the proviso that         (CH(R¹⁴))_(j) is bonded to the pyrone ring;     -   R⁷ is selected from the group consisting of hydrido, hydroxy,         alkyl, and alkoxyalkyl;     -   R¹⁴ is selected from the group consisting of hydrido and halo;     -   E⁰ is E², when K is (CH(R¹⁴))_(j)-T, wherein E² is selected from         the group consisting of C(O)N(H), (H)NC(O), S(O)₂N(H),         N(H)S(O)₂, S(O)₂N(H)C(O), and C(O)N(H)S(O)₂;     -   Y⁰ is formula (IV):         wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the         group consisting of C, N, O, S and a covalent bond with the         provisos that no more than one can be a covalent bond, K² is         independently selected from the group consisting of C, and N⁺,         no more than one of D⁵, D⁶, J⁵, and J⁶ is O, no more than one of         D⁵, D⁶, J⁵, and J⁶ is S, one of D⁵, D⁶, J⁵, and J⁶ must be a         covalent bond when two of D⁵, D⁶, J⁵, and J⁶ are O and S, no         more than three of D⁵, D⁶, J⁵, and J⁶ can be N when K² is N⁺,         and no more than four of D⁵, D⁶, J⁵, and J⁶ can be N when K² is         carbon with the provisos that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each         independently selected to maintain the tetravalent nature of         carbon, trivalent nature of nitrogen, the divalent nature of         sulfur, and the divalent nature of oxygen;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, dialkylsulfonium,         carboxy, haloalkylthio, alkoxy, hydroxy, amino, thio, nitro,         lower alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl,         alkanoyl, alkenoyl, haloalkanoyl, alkyl, alkenyl, halo,         haloalkyl, haloalkenyl, haloalkoxy, hydroxyalkyl, aminoalkyl,         haloalkoxyalkyl, carboalkoxy, carboalkoxyalkyl, and cyano;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹,         ⁺NR²⁰R²¹R²², oxy, alkyl, alkylaminoalkyl, aminoalkyl,         dialkylsulfoniumalkyl, and acylamino wherein R²⁰, R²¹, and R²²         are independently selected from the group consisting of hydrido,         alkyl, hydroxy, alkoxy, alkylamino, dialkylamino, aminoalkyl,         and hydroxyalkyl with the provisos that no more than one of R²⁰,         R²¹, and R²² can be hydroxy, alkoxy, alkylamino, amino, and         dialkylamino and that R²⁰, R²¹, and R²² must be other than be         hydroxy, alkoxy, alkylamino, amino, and dialkylamino when K² is         N⁺;     -   Q^(b) can be selected from the group consisting of         dialkylsulfonium, trialkylphosphonium, C(NR²⁵)NR²³R²⁴,         N(R²⁶)C(NR²⁵)N(R²³)(R₂₄), C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)SO₂N(R²³)(R²⁴),         C(O)NR²³R²⁴, and C(O)NR²³R²⁴ with the provisos that no more than         one of R²³, R²⁴, and R²⁶ can be hydroxy, alkoxy, alkylamino,         amino, or dialkylamino when two of the group consisting of R²³,         R²⁴, and R²⁶ are bonded to the same atom and that said Q^(b)         group is bonded directly to a carbon atom;     -   R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group         consisting of hydrido, alkyl, hydroxy, alkoxy, alkylamino,         dialkylamino, aminoalkyl, and hydroxyalkyl;     -   Q^(s) is selected from the group consisting of a single covalent         bond and (CR³⁷R³⁸)_(b)—(W⁰)_(az) wherein az is an integer         selected from 0 through 1, b is the integer 1, and W⁰ is         selected from the group consisting of O, S, and C(O) with the         proviso that (CR³⁷R³⁸)_(b) is bonded to E⁰;     -   R³⁷ and R³⁸ are independently selected from the group consisting         of hydrido, halo, alkyl, and haloalkyl.

In a specific embodiment of Formula 1, compounds have the Formula I—S:

or a pharmaceutically acceptable salt thereof, wherein;

-   B is selected from the group consisting of phenyl, 2-thienyl,     3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl,     4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 1,2,4-triazol-3-yl,     1,2,4-triazol-5-yl, 1,2,4-oxadiazol-3-yl, 1,2,4 oxadiazol-5-yl,     1,3,4-oxadiazol-3-yl, 1,3,4-oxadiazol-5-yl, 3-isothiazolyl, 5     isothiazolyl, 2-oxazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl,     2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl,     4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl,     1,3,5-triazin-2-yl, 1,2,4-triazin-3-yl, 1,2,4-triazin-5-yl,     1,2,4-triazin-6-yl, and 1,2,3-triazin-yl, wherein a carbon adjacent     to the carbon at the point of attachment may be substituted by R³²,     the other carbon adjacent to the carbon at the point of attachment     may be substituted by R³⁶, a carbon adjacent to R³² and two atoms     from the carbon at the point of attachment may be substituted by     R³³, a carbon adjacent to R³⁶ and two atoms from the carbon at the     point of attachment may be substituted by R³⁵, and any carbon     adjacent to both R³³ and R³⁵ may be substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, amidino, guanidino,         dimethylsulfonium, carboxy, methoxy, ethoxy, isopropoxy,         propoxy, hydroxy, amino, methoxyamino, ethoxyamino, thio, nitro,         aminomethyl, 1-aminoethyl, 2-aminoethyl, N—N-methylamino,         dimethylamino, N-ethylamino, methylthio, ethylthio,         isopropylthio, trifluoromethylthio, methylsulfinyl,         ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl,         N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, acetyl,         propanoyl, trifluoroacetyl, pentafluoropropanoyl, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl,         2,2,2-trifluoro-1-trifluoromethyl-1-hydroxyethyl, carboxymethyl,         methoxycarbonyl, ethoxycarbonyl, amidocarbonyl,         N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and         Q^(b);     -   B can be selected from the group consisting of 1-propenyl,         propyl, isopropyl, butyl, 2-butenyl, 3-butenyl, 2-butynyl,         sec-butyl, isobutyl, 2-methylpropenyl, 1-pentyl, 2-pentenyl,         3-pentenyl, 4-pentenyl, 2-pentynyl, 3-pentynyl, 2-pentyl,         1-methyl-2-butenyl, 1-methyl-3-butenyl, 1-methyl-2-butynyl,         3-pentyl, 1-ethyl-2-propenyl, 2-methylbutyl, 2-methyl-2-butenyl,         2-methyl-3-butenyl, 2-methyl-3-butynyl, 3-methylbutyl,         3-methyl-2-butenyl, 3-methyl-3-butenyl, 1-hexyl, 2-hexenyl,         3-hexenyl, 4-hexenyl, 5-hexenyl, 2-hexynyl, 3-hexynyl,         4-hexynyl, 2-hexyl, 1-methyl-2-pentenyl, 1-methyl-3-pentenyl,         1-methyl-pentenyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl,         3-hexyl, 1-ethyl-2-butenyl, 1-ethyl-3-butenyl,         1-propyl-2-propenyl, 1-ethyl-2-butynyl, 1-heptyl, 2-heptenyl,         3-heptenyl, 4-heptenyl, 5-heptenyl, 6-heptenyl, 2-heptynyl,         3-heptynyl, 4-heptynyl, 5-heptynyl, 2-heptyl,         1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methyl-hexenyl,         1-methyl-5-hexenyl, 1-methyl-2-hexynyl, 1-methyl-3-hexynyl,         1-methyl-4-hexynyl, 3-heptyl, 1-ethyl-2-pentenyl,         1-ethyl-3-pentenyl, 1-ethyl-4-pentenyl, 1-butyl-2-propenyl,         1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 1-octyl, 2-octenyl,         3-octenyl, 4-octenyl, 5-octenyl, 6-octenyl, 7-octenyl,         2-octynyl, 3-octynyl, 4-octynyl, 5-octynyl, &octynyl, 2-octyl,         1-methyl-2-heptenyl, 1-methyl-3-heptenyl, 1-methyl-heptenyl,         1-methyl-5-heptenyl, 1-methyl-6-heptenyl, 1-methyl-2-heptynyl,         1-methyl-3-heptynyl, 1-methyl-heptenyl, 1-methyl-5-heptenyl,         1-methyl-6-heptenyl, 1-methyl-2-heptenyl, 1-methyl-3-heptynyl,         1-methyl-heptynyl, 1-methyl-5-heptynyl, 3-octyl,         1-ethyl-2-hexenyl, 1-ethyl-3-hexenyl, 1-ethyl-4-hexenyl,         1-ethyl-2-hexynyl, 1-ethyl-3-hexynyl, 1-ethyl-hexynyl,         1-ethyl-5-hexenyl, 1-pentyl-2-propenyl, 4-octyl,         1-propyl-2-pentenyl, 1-propyl-3-pentenyl, 1-propyl-4-pentenyl,         1-butyl-2-butenyl, 1-propyl-2-pentynyl, 1-propyl-3-pentynyl,         1-butyl-2-butynyl, 1-butyl-3-butenyl, 2,2-difluoropropyl,         4-trifluoromethyl-5,5,5-trifluoropentyl,         4-trifluoromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and         3,3,3-trifluoropropyl, wherein each member of group B may be         optionally substituted at any carbon up to and including 5 atoms         from the point of attachment of B to A with one or more of the         group consisting of R₃₂, R₃₃, R₃₄, R₃₅, and R₃₆;     -   B can be selected from the group consisting of cyclopropyl,         cyclobutyl, oxetan-2-yl, oxetan-3-yl, azetidin-1-yl,         azetidin-2-yl, azetidin-3-yl, thiaetan-2-yl, thiaetan-3-yl,         cyclopentyl, cyclopent-2-enyl, cyclopent-3-enyl, cyclohexyl, 4         methyl cyclohexyl, 4-chloro-3-ethylphenoxycyclohexyl,         3-trifluoromethoxyphenoxycyclohexyl,         3-trifluoromethylcyclohexyl, 4 trifluoromethylcyclohexyl,         3,5-bis-trifluoromethylcyclohexyl, adamantyl,         3-trifluoromethyladamantyl, norbornyl,         3-trifluoromethylnorbornyl, norbornenyl,         7-oxabicyclo[2.2.1]heptan-2-yl, bicyclo[3.1.0]hexan-6-yl,         cyclohex-2-enyl, cyclohex-3-enyl, cycloheptyl, cyclohept-2-enyl,         cyclohept-3-enyl, cyclooctyl, cyclooct-2-enyl, cyclooct-3-enyl,         cycloocttenyl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl,         1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl,         3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl,         3-pyrrolidinyl, 2-dioxanyl, 2H-2-pyranyl, 2H-3-pyranyl,         2H-pyranyl, 4H-2-pyranyl, 4H-3-pyranyl, 4H-pyranyl,         2H-pyran-2-one-3-yl, 2H-pyran-2-one-4-yl, 2H-pyran-2-one-5-yl,         4H-pyran-4-one-2-yl, 4H-pyran-4-one-3-yl, 2-tetrahydrofuranyl,         3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl,         4-tetrahydropyranyl, 2-tetrahydrothienyl, and         3-tetrahydrothienyl, wherein each ring carbon may be optionally         substituted with R₃₃, a ring carbon and nitrogen atoms adjacent         to the carbon atom at the point of attachment may be optionally         substituted with R₉ or R₁₃, a ring carbon or nitrogen atom         adjacent to the R₉ position and two atoms from the point of         attachment may be substituted with R₁₀, and a ring carbon or         nitrogen atom adjacent to the R₁₃ position and two atoms from         the point of attachment may be substituted with R₁₂;     -   R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the         group consisting of amidino, guanidino, dimethylsulfonium,         methylethylsulfonium, carboxy, methoxy, ethoxy, isopropoxy,         propoxy, butoxy, hydroxy, amino, methoxyamino, ethoxyamino,         aminomethyl, 1-aminoethyl, 2-aminoethyl, N—N-dimethylamino,         N-methylamino, N-ethylamino, methylsulfinyl, ethylsulfinyl,         methylsulfonyl, ethylsulfonyl, amidosulfonyl,         N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, acetyl,         propanoyl, butanoyl, trifluoroacetyl, pentafluoropropanoyl,         hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl,         2,2,2-trifluoro-1-hydroxyethyl,         2,2,2-trifluoro-1-trifluoromethyl-1-hydroxyethyl, carboxymethyl,         2-carboxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl,         N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano;     -   A is selected from the group consisting of single covalent bond,         O, C(O), CH₂, CH₃CH, CF₃CH, CH₃CC(O), CF₃CC(O), C(O)CCH₃,         C(O)CCF₃, CH₂C(O), (O)CCH₂, CH₂CH₂, CH₂CH₂CH₂, CH₃CCH₂, CF₃CCH₂,         CH₃CC(O)CH₂, CF₃CC(O)CH₂, CH₂C(O)CCH₃, CH₂C(O)CCF₃, CH₂CH₂C(O),         and CH₂(O)CCH₂;     -   R² is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         1,2,4-triazol-3-yl, 1,2,4-triazol-5-yl, 1,2,4-oxadiazol-3-yl,         1,2,4 oxadiazol-5-yl, 1,3,4-oxadiazol-3-yl,         1,3,4-oxadiazol-5-yl, 3-isothiazolyl, 5-isothiazolyl,         2-oxazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl,         3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl,         5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, 1,3,5-triazin-2-yl,         1,2,4-triazin-3-yl, 1,2,4-triazin-S-yl, 1,2,4-triazin-6-yl, and         1,2,3-triazin-yl, wherein a carbon adjacent to the carbon at the         point of attachment may be substituted by R⁹, the other carbon         adjacent to the carbon at the point of attachment may be         substituted by R¹³, a carbon adjacent to R⁹ and two atoms from         the carbon at the point of attachment may be substituted by R¹⁰,         a carbon adjacent to R¹³ and two atoms from the carbon at the         point of attachment may be substituted by R¹², and any carbon         adjacent to both R¹⁰ and R¹² may be substituted by R¹¹;     -   K is CR^(4a)R^(4b) wherein R^(4a) and R^(4b) are independently         selected from the group consisting of chloro, fluoro, and         hydrido;     -   E⁰ is E¹, when K is CR^(4a)R^(4b), wherein E¹ is selected from         the group consisting of a covalent single bond, C(O)N(H),         (H)NC(O), S(O)₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and         C(O)N(H)S(O)₂;     -   K can be N(H) and CH₂N(H);     -   E⁰ is E², when K is N(H) and CH₂N(H), wherein E² is selected         from the group consisting of C(O)N(H), (H)NC(O), S(O)₂N(H),         N(H)S(O)₂, S(O)₂N(H)C(O) and C(O)N(H)S(O)₂;     -   Y⁰ is selected from the group of formulas consisting of:     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, dimethylsulfonium,         carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino,         methoxyamino, ethoxyamino, thio, nitro, aminomethyl,         1-aminoethyl, 2-aminoethyl, N—N-methylamino, dimethylamino,         N-ethylamino, methylthio, ethylthio, isopropylthio,         trifluoromethylthio, methylsulfinyl, ethylsulfinyl,         methylsulfonyl, ethylsulfonyl, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl,         N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, acetyl,         propanoyl, trifluoroacetyl, pentafluoropropanoyl, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl,         2,2,2-trifluoro-1-trifluoromethyl-1-hydroxyethyl, carboxymethyl,         methoxycarbonyl, ethoxycarbonyl, amidocarbonyl,         N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano;     -   Q^(b) is selected, when bonded to a carbon, from the group         consisting of NR²⁰R²¹, ⁺NR²⁰R²¹R²², dimethylsulfonium,         methylethylsulfonium, diethylsulfonium, trimethylphosphonium,         C(NR²⁵)NR²³R²⁴, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         N(R²⁶)N(R²⁶)SO₂N(R²³)(R²⁴), C(O)NR²³R²⁴, and C(O)NR²³R²⁴ with         the provisos that no more than one of R²⁰, R²¹, and R²² can be         hydroxy, methoxy, ethoxy, N-methylamino, N,N-dimethylamino, and         N,N,N-trimethylamino, and amino and that no more than one of         R²³, R²⁴, and R²⁶ can be hydroxy, methoxy, ethoxy,         N-methylamino, N,N-dimethylamino, N,N,N-trimethylamino, or amino         when two of the group consisting of R²³, R²⁴, and R²⁶ are bonded         to the same atom and that said Q^(b) group is bonded directly to         a carbon atom;     -   R²⁰, R²¹, R²², R²³, R²⁴, R²⁵, and R²⁶ are independently selected         from the group consisting of hydrido, methyl, ethyl, propyl,         butyl, isopropyl, hydroxy, methoxy, ethoxy, isopropoxy, propoxy,         2-aminoethyl, 2-(N-methylamino)ethyl,         2-(N,N-dimethylamino)ethyl, 2-(N,N,N-trimethylamino)ethyl,         N-(2-hydroxyethyl)amino, N,N-bis-(2-hydroxyethyl)amino,         N-(2-hydroxyethyl)-N-(2-aminoethyl)amino, N-methylamino,         N-ethylamino, N,N-dimethylamino, N,N-diethylamino, and         N,N,N-trimethylamino;     -   Q^(b) is selected, when bonded to a nitrogen, from the group         consisting of oxy, methyl, ethyl, 2-aminoethyl,         2-(N-methylamino)ethyl, 2-(N,N-dimethylamino)ethyl,         2-(N,N,N-trimethylamino)ethyl, N-(2-hydroxyethyl)amino,         N,N-bis-(2-hydroxyethyl)amino, amino, hydroxylamino,         N-methoxyamino, N-methylamino, N,N-dimethylamino, and         N,N,N-trimethylamino;     -   Q^(s) is selected from the group consisting of a single covalent         bond, CH₂, CH₃CH, CF₂, CF₃CH, CH₂O, CH₃C(H)O, CF₃C(H)O, CH₂S,         CH₃C(H)S, CF₃C(H)S, CH₂C(O), CH₃C(H)C(O), CF₃C(H)C(O), and         CF₂C(O) with the proviso that Q^(s) is bonded to E⁰ through a         carbon atom.

In a more preferred specific embodiment of Formula I, compounds have the Formula I-MPS:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4         pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl,         5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and         1,3,5-triazin-2-yl, wherein a carbon adjacent to the carbon at         the point of attachment may be substituted by R³², the other         carbon adjacent to the carbon at the point of attachment may be         substituted by R³⁶, a carbon adjacent to R³² and two atoms from         the carbon at the point of attachment may be substituted by R³³,         a carbon adjacent to R³⁶ and two atoms from the carbon at the         point of attachment may be substituted by R³⁵, and any carbon         adjacent to both R³³ and R³⁵ may be substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, amidino, guanidino,         dimethylsulfonium, carboxy, methoxy, ethoxy, isopropoxy,         propoxy, hydroxy, amino, methoxyamino, ethoxyamino, thio, nitro,         aminomethyl, 1-aminoethyl, 2-aminoethyl, N-N-methylamino,         dimethylamino, N-ethylamino, methylthio, ethylthio,         trifluoromethylthio, methylsulfinyl, ethylsulfinyl,         methylsulfonyl, ethylsulfonyl, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl,         N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, acetyl,         propanoyl, trifluoroacetyl, pentafluoropropanoyl, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl,         2,2,2-trifluoro-1-trifluoromethyl-1-hydroxyethyl, carboxymethyl,         methoxycarbonyl, ethoxycarbonyl, amidocarbonyl,         N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and         Q^(b);     -   B can be selected from the group consisting of 1-propenyl,         propyl, isopropyl, butyl, 2-butenyl, 3-butenyl, sec-butyl,         isobutyl, 2-methylpropenyl, 1-pentyl, 2-pentenyl, 3-pentenyl,         4-pentenyl, 2-pentyl, 1-methyl-2-butenyl, 1-methyl-3-butenyl,         3-pentyl, 1-ethyl-2-propenyl, 2-methylbutyl, 2-methyl-2-butenyl,         2-methyl-3-butenyl, 3-methylbutyl, 3-methyl-2-butenyl,         3-methyl-3-butenyl, 2,2-difluoropropyl,         2-trifluoromethyl-3,3,3-trifluoropropyl,         1,1,1,2,2,2-hexafluoropropyl, 3,3,3-trifluoroprop-1-yl, and         3,3,3-trifluoroprop-2-yl, wherein each member of group B may be         optionally substituted at any carbon up to and including 5 atoms         from the point of attachment of B to A with one or more of the         group consisting of R₃₂, R₃₃, R₃₄, R₃₅, and R₃₆;     -   B can be selected from the group consisting of cyclopropyl,         cyclobutyl, oxetan-2-yl, oxetan-3-yl, azetidin-1-yl,         azetidin-2-yl, azetidin-3-yl, thiaetan-2-yl, thiaetan-3-yl,         wherein each ring carbon may be optionally substituted with R₃₃,         a ring carbon and nitrogen atoms adjacent to the carbon atom at         the point of attachment may be optionally substituted with R₉ or         R₁₃, a ring carbon or nitrogen atom adjacent to the R₉ position         and two atoms from the point of attachment may be substituted         with R₁₀, and a ring carbon or nitrogen atom adjacent to the R₁₃         position and two atoms from the point of attachment may be         substituted with R₁₂;     -   R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the         group consisting of amidino, guanidino, dimethylsulfonium,         carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino,         methoxyamino, ethoxyamino, aminomethyl, 1-aminoethyl,         2-aminoethyl, N—N-methylamino, dimethylamino, N-ethylamino,         methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl,         amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl,         acetyl, propanoyl, trifluoroacetyl, pentafluoropropanoyl,         hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl,         2,2,2-trifluoro-1-hydroxyethyl,         2,2,2-trifluoro-1-trifluoromethyl-1-hydroxyethyl, carboxymethyl,         methoxycarbonyl, ethoxycarbonyl, amidocarbonyl,         N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano;     -   A is selected from the group consisting of single covalent bond,         O, C(O), CH₂, CH₃CH, CF₃CH, CH₃CC(O), CF₃CC(O), C C(O)CCH₃,         C(O)CCF₃, CH₂C(O), and (O)CCH₂;     -   R² is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         2-thiazolyl, 3-isoxazolyl, 5 isoxazolyl, 2-pyridyl, 3-pyridyl, 4         pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl,         5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and         1,3,5-triazin-2-yl, wherein a carbon adjacent to the carbon at         the point of attachment may be substituted by R⁹, the other         carbon adjacent to the carbon at the point of attachment may be         substituted by R¹³, a carbon adjacent to R⁹ and two atoms from         the carbon at the point of attachment may be substituted by R¹⁰,         a carbon adjacent to R¹³ and two atoms from the carbon at the         point of attachment may be substituted by R¹², and any carbon         adjacent to both R¹⁰ and R¹² may be substituted by R¹¹;     -   K is CR^(4a)R^(4b) wherein R^(4a) and R^(4b) are independently         selected from the group consisting of chloro, fluoro, and         hydrido;     -   E⁰ is E¹, when K is CR^(4a)R^(4b), wherein E¹ is selected from         the group consisting of a covalent single bond, C(O)N(H),         (H)NC(O), S(O)₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and         C(O)N(H)S(O)₂;     -   K can be N(H) and CH₂N(H);     -   E⁰ is E², when K is N(H) and CH₂N(H), wherein E² is selected         from the group consisting of C(O)N(H), (H)NC(O), S(O)₂N(H),         N(H)S(O)₂, S(O)₂N(H)C(O), and C(O)N(H)S(O)₂;     -   Y⁰ is selected from the group of formulas consisting of:     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, methoxy, ethoxy,         isopropoxy, methylthio, ethylthio, trifluoromethylthio,         trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, acetyl,         propanoyl, trifluoroacetyl, pentafluoropropanoyl,         methoxycarbonyl, ethoxycarbonyl, and cyano;     -   Q^(b) is selected, when bonded to a carbon, from the group         consisting of NR²⁰R²¹, ⁺NR²⁰R²¹R²², dimethylsulfonium,         methylethylsulfonium, diethylsulfonium, trimethylphosphonium,         C(NR²⁵)NR²³R²⁴, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         N(R²⁶)N(R²⁶)SO₂N(R²³)(R²⁴), C(O)NR²³R²⁴, and C(O)NR²³R²⁴ with         the provisos that no more than one of R²⁰, R²¹, and R²² can be         hydroxy, methoxy, ethoxy, N-methylamino, N,N-dimethylamino,         N,N,N-trimethylamino, or amino and that no more than one of R²³,         R²⁴, and R²⁶ can be hydroxy, methoxy, ethoxy, N-methylamino,         N,N-dimethylamino, N,N,N-trimethylamino, or amino when two of         the group consisting of R²³, R²⁴, and R²⁶ are bonded to the same         atom and that said Q^(b) group is bonded directly to a carbon         atom;     -   R²⁰, R²¹, R²², R²³, R²⁴, R²⁵, and R²⁶ are independently selected         from the group consisting of hydrido, methyl, ethyl, hydroxy,         methoxy, ethoxy, 2-aminoethyl, 2-(N-methylamino)ethyl,         2-(N,N-dimethylamino)ethyl, 2-(N,N,N-trimethylamino)ethyl,         N-(2-hydroxyethyl)amino, N,N-bis-(2-hydroxyethyl)amino,         N-(2-hydroxyethyl)-N-(2-aminoethyl)amino, N-methylamino,         N,N-dimethylamino, and N,N,N-trimethylamino;     -   Q^(b) is selected, when bonded to a nitrogen, from the group         consisting of oxy, methyl, ethyl, 2-aminoethyl,         2-(N-methylamino)ethyl, 2-(N,N-dimethylamino)ethyl,         2-(N,N,N-trimethylamino)ethyl, N-(2-hydroxyethyl)amino,         N,N-bis-(2-hydroxyethyl)amino, amino, hydroxylamino,         N-methoxyamino, N-methylamino, N,N-dimethylamino, and         N,N,N-trimethylamino;     -   Q^(s) is selected from the group consisting of a single covalent         bond, CH₂, CH₃CH, CF₂, CF₃CH, CH₂O, CH₃C(H)O, CF₃C(H)O, CH₂S,         CH₃C(H)S,

CF₃C(H)S, CH₂C(O), CH₃C(H)C(O), CF₃C(H)C(O), and CF₂C(O) with the proviso that Q^(s) is bonded to E⁰ through a carbon atom.

In an even more preferred specific embodiment of compounds of Formula I, compounds have the Formula I-EMPS:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl,         and 4 pyridyl, wherein a carbon adjacent to the carbon at the         point of attachment may be substituted by R³², the other carbon         adjacent to the carbon at the point of attachment may be         substituted by R³⁶, a carbon adjacent to R³² and two atoms from         the carbon at the point of attachment may be substituted by R³³,         a carbon adjacent to R³⁶ and two atoms from the carbon at the         point of attachment may be substituted by R³⁵, and any carbon         adjacent to both R³³ and R³⁵ may be substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, amidino, guanidino, methoxy,         ethoxy, hydroxy, amino, methoxyamino, ethoxyamino, aminomethyl,         1-aminoethyl, 2-aminoethyl, N—N-methylamino, dimethylamino,         N-ethyl amino, trifluoromethyl, pentafluoroethyl,         2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, fluoro,         chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl,         2,2,2-trifluoro-1-hydroxyethyl,         2,2,2-trifluoro-1-trifluoromethyl-1-hydroxyethyl,         methoxycarbonyl, ethoxycarbonyl, cyano, and Q^(b);     -   B can be selected from the group consisting of propyl,         isopropyl, butyl, sec-butyl, isobutyl, 1-pentyl, 2-pentyl,         3-pentyl, 2-methylbutyl, 3-methylbutyl, 2,2-difluoropropyl,         2-trifluoromethyl-3,3,3-trifluoropropyl,         1,1,1,2,2,2-hexafluoropropyl, 3,3,3-trifluoroprop-1-yl, and         3,3,3-trifluoroprop-2-yl, wherein each member of group B may be         optionally substituted at any carbon up to and including 5 atoms         from the point of attachment of B to A with one or more of the         group consisting of R₃₂, R₃₃, R₃₄, R₃₅, and R₃₆;     -   B can be selected from the group consisting of cyclopropyl,         cyclobutyl, oxetan-2-yl, oxetan-3-yl, azetidin-1-yl,         azetidin-2-yl, azetidin-3-yl, thiaetan-2-yl, thiaetan-3-yl,         wherein each ring carbon may be optionally substituted with R₃₃,         a ring carbon and nitrogen atoms adjacent to the carbon atom at         the point of attachment may be optionally substituted with R₉ or         R₁₃, a ring carbon or nitrogen atom adjacent to the R₉ position         and two atoms from the point of attachment may be substituted         with R₁₀, and a ring carbon or nitrogen atom adjacent to the R₁₃         position and two atoms from the point of attachment may be         substituted with R₁₂;     -   R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the         group consisting of amidino, guanidino, carboxy, methoxy,         ethoxy, hydroxy, amino, methoxyamino, ethoxyamino, aminomethyl,         1-aminoethyl, 2-aminoethyl, N—N-methylamino, dimethylamino,         N-ethylamino, acetyl, propanoyl, trifluoroacetyl,         pentafluoropropanoyl, hydroxymethyl, 1-hydroxyethyl,         2-hydroxyethyl, carboxymethyl, methoxycarbonyl, ethoxycarbonyl,         amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl,         and cyano;

-   A is selected from the group consisting of single covalent bond, O,     C(O), CH₂, CH₂C(O), and (O)CCH₂;     -   R² is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         2-thiazolyl, 3-isoxazolyl, 5 isoxazolyl, 2-pyridyl, 3-pyridyl, 4         pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl,         5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and         1,3,5-triazin-2-yl, wherein a carbon adjacent to the carbon at         the point of attachment may be substituted by R⁹, the other         carbon adjacent to the carbon at the point of attachment may be         substituted by R¹³, a carbon adjacent to R⁹ and two atoms from         the carbon at the point of attachment may be substituted by R¹⁰,         a carbon adjacent to R¹³ and two atoms from the carbon at the         point of attachment may be substituted by R¹², and any carbon         adjacent to both R¹⁰ and R¹² may be substituted by R¹¹;     -   K is CR^(4a)R^(4b) herein R^(4a) and R^(4b) are independently         selected from the group consisting of chloro, fluoro, and         hydrido;     -   E⁰ is E¹, when K is CR^(4a)R^(4b), wherein E¹ is selected from         the group consisting of a covalent single bond, C(O)N(H),         (H)NC(O), S(O)₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and         C(O)N(H)S(O)₂;     -   K can be N(H) and CH₂N(H);     -   E⁰ is E², when K is N(H) and CH₂N(H), wherein E² is selected         from the group consisting of C(O)N(H), (H)NC(O), S(O)₂N(H),         N(H)S(O)₂, S(O)₂N(H)C(O), and C(O)N(H)S(O)₂;     -   Y⁰ is selected from the group of formulas consisting of:     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, methoxy, ethoxy, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy,         fluoro, chloro, bromo, acetyl, trifluoroacetyl, methoxycarbonyl,         ethoxycarbonyl, and cyano;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹,         ⁺NR²⁰R²¹R²², dimethylsulfonium, methylethylsulfonium,         diethylsulfonium, trimethylphosphonium, C(NR²⁵)NR²³R²⁴,         N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴),         N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R₂₄), N(R²⁶)N(R²⁶)SO₂N(R²³)(R²⁴),         C(O)NR²³R²⁴, and C(O)NR²³R²⁴ with the provisos that no more than         one of R²⁰, R²¹, and R²² can be hydroxy, methoxy, ethoxy,         N-methylamino, N,N-dimethylamino, N,N,N-trimethylamino, or amino         and that no more than one of R²³, R²⁴, and R²⁶ can be hydroxy,         methoxy, ethoxy, N-methylamino, N,N-dimethylamino,         N,N,N-trimethylamino, or amino when two of the group consisting         of R²³, R²⁴, and R²⁶ are bonded to the same atom and that said         Q^(b) group is bonded directly to a carbon atom;     -   R²⁰, R²¹, R²², R²³, R²⁴, R²⁵, and R²⁶ are independently selected         from the group consisting of hydrido, methyl, ethyl, hydroxy,         methoxy, ethoxy, 2-aminoethyl, 2-(N-methylamino)ethyl,         2-(N,N-dimethylamino)ethyl, 2-(N,N,N-trimethylamino)ethyl,         N-(2-hydroxyethyl)amino, N,N-bis-(2-hydroxyethyl)amino,         N-(2-hydroxyethyl)-N-(2-aminoethyl)amino, N-methylamino,         N,N-dimethylamino, and N,N,N-trimethylamino;     -   Q^(s) is selected from the group consisting of a single covalent         bond, CH₂, CH₃CH, CF₂, CF₃CH, CH₂O, CH₃C(H)O, CF₃C(H)O, CH₂C(O),         CH₃C(H)C(O), CF₃C(H)C(O), and CF₂C(O) with the proviso that         Q^(s) is bonded to E⁰ through a carbon atom.

In a preferred embodiment of a compound of Formula I, said compound is the formula:

or a pharmaceutically acceptable salt thereof, wherein;

B is phenyl or a heteroaryl of 5 or 6 ring members, wherein a nitrogen with a removable hydrogen or a carbon adjacent to the carbon at the point of attachment of said phenyl or heteroaryl ring to A is optionally substituted by R³², a nitrogen with a removable hydrogen or a carbon at the other position adjacent to the point of attachment is optionally substituted by R³⁶, a nitrogen with a removable hydrogen or a carbon adjacent to R³² and two atoms from the point of attachment is optionally substituted by R³³, a nitrogen with a removable hydrogen or a carbon adjacent to R³⁶ and two atoms from the point of attachment is optionally substituted by R³⁵, and a nitrogen with a removable hydrogen or a carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

-   -   R⁹, R¹⁰, R¹¹, R¹², R¹³, R³², R³³, R³⁴, R³⁵, and R³⁶ are         independently selected from the group consisting of hydrido,         acetamido, haloacetamido, amidino, guanidino, alkylenedioxy,         haloalkylthio, alkanoyloxy, alkoxy, cycloalkoxy,         cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy,         heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy,         alkoxyalkyl, haloalkoxylalkyl, hydroxy, amino, alkoxyamino,         nitro, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino,         heteroarylamino, heteroaralkylamino, heterocyclylamino,         heterocyclylalkylamino, alkylthio, alkylthioalkyl,         alkylsulfinyl, arylsulfinyl, aralkylsulfinyl,         cycloalkylsulfinyl, heteroarylsulfinyl, alkylsulfonyl,         arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl,         heteroarylsulfonyl, alkylsulfonylalkyl, aryl, aralkyl,         cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl,         alkylsulfonamido, amidosulfonyl, alkanoyl, haloalkanoyl, alkyl,         alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy,         hydroxyhaloalkyl, hydroxyalkyl, aminoalkyl, haloalkoxyalkyl,         carboxyalkyl, carboalkoxy, carboxy, carboxamido,         carboxamidoalkyl, and cyano;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently optionally Q^(b);     -   B is optionally selected from the group consisting of hydrido,         trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl,         C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group         B is optionally substituted at any carbon up to and including 6         atoms from the point of attachment of B to A with one or more of         the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;     -   B is optionally a C3-C12 cycloalkyl or C4-C9 saturated         heterocyclyl, wherein each ring carbon is optionally substituted         with R³³, a ring carbon other than the ring carbon at the point         of attachment of B to A is optionally substituted with oxo         provided that no more than one ring carbon is substituted by oxo         at the same time, ring carbons and a nitrogen adjacent to the         carbon atom at the point of attachment are optionally         substituted with R⁹ or R¹³, a ring carbon or nitrogen atom         adjacent to the R⁹ position and two atoms from the point of         attachment is optionally substituted with R¹⁰, a ring carbon or         nitrogen adjacent to the R¹³ position and two atoms from the         point of attachment is optionally substituted with R¹², a ring         carbon or nitrogen three atoms from the point of attachment and         adjacent to the R¹⁰ position is optionally substituted with R¹¹,         a ring carbon or nitrogen three atoms from the point of         attachment and adjacent to the R¹² position is optionally         substituted with R³³, and a ring carbon or nitrogen four atoms         from the point of attachment and adjacent to the R¹¹ and R³³         positions is optionally substituted with R³⁴;     -   A is selected from the group consisting of a bond,         (W⁷)_(rr)-(CH(R¹⁵))_(pa), and (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein         rr is 0 or 1, pa is an integer selected from 0 through 6, and W⁷         is selected from the group consisting of O, S, C(O), (R⁷)NC(O),         (R⁷)NC(S), and N(R⁷) with the proviso that no more than one of         the group consisting of rr and pa is 0 at the same time;     -   R⁷ is selected from the group consisting of hydrido, hydroxy,         and alkyl;     -   R¹⁵ is selected from the group consisting of hydrido, hydroxy,         halo, alkyl, and haloalkyl;     -   Ψ is NH or NOH;     -   X⁰ is selected from the group consisting of hydrido, alkyl,         alkenyl, cyano, halo, haloalkyl, haloalkoxy, haloalkylthio,         amino, aminoalkyl, alkylamino, amidino, hydroxy, hydroxyamino,         alkoxy, hydroxyalkyl, alkoxyamino, thiol, and alkylthio;     -   R² is Z⁰-Q;     -   Z⁰ is selected from the group consisting of a bond,         (CR⁴¹R⁴²)_(q) wherein q is an integer selected from 1 through 3,         and (CH(R⁴¹))_(g)—W⁰—(CH(R⁴²))_(p) wherein g and p are integers         independently selected from 0 through 3 and W⁰ is selected from         the group consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹);     -   Z⁰ is optionally (CH(R⁴¹))_(e)—W²²—(CH(R⁴²))_(h) wherein e and h         are independently 0 or 1 and W²² is selected from the group         consisting of CR⁴¹═CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl,         1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl,         1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl,         2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl,         1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl,         2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl,         2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl,         3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl,         2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl,         3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl,         2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, wherein Z⁰ is         directly bonded to the 4-pyrone ring and W²² is optionally         substituted with one or more substituents selected from the         group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³;     -   R⁴¹ and R⁴² are independently selected from the group consisting         of amidino, hydroxyamino, hydrido, hydroxy, amino, and alkyl;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         nitrogen with a removable hydrogen or a carbon adjacent to the         carbon at the point of attachment of said phenyl or heteroaryl         ring to Z⁰ is optionally substituted by R⁹, a nitrogen with a         removable hydrogen or a carbon at the other position adjacent to         the point of attachment is optionally substituted by R¹³, a         nitrogen with a removable hydrogen or a carbon adjacent to R⁹         and two atoms from the point of attachment is optionally         substituted by R¹⁰, a nitrogen with a removable hydrogen or a         carbon adjacent to R¹³ and two atoms from the point of         attachment is optionally substituted by R¹², and a nitrogen with         a removable hydrogen or a carbon adjacent to both R¹⁰ and R¹² is         optionally substituted by R¹¹;     -   Q is optionally hydrido with the proviso that Z⁰ is selected         from other than a bond;     -   K is CR^(4a)R^(4b);     -   R^(4a) and R^(4b) are independently selected from the group         consisting of halo, hydrido, hydroxyalkyl, alkyl, alkoxyalkyl,         alkylthioalkyl, and haloalkyl;     -   E⁰, with the proviso that K is CR^(4a)R^(4b), is E¹ wherein E¹         is selected from the group consisting of a covalent single bond,         C(O)N(H), (H)NC(O), C(S)N(H), (H)NC(S), S(O)₂N(H), N(H)S(O)₂,         S(O)₂N(H)C(O), and C(O)N(H)S(O)₂;     -   K is optionally (CH(R¹⁴))_(j)-T wherein j is 0 or 1 and T is a         bond or N(R⁷) with the proviso that (CH(R¹⁴))_(j) is bonded to         the phenyl ring;     -   R¹⁴ is selected from the group consisting of hydrido, halo,         alkyl, and haloalkyl;     -   E⁰, with the proviso that K is (CH(R¹⁴))_(j)-T, is E² wherein E²         is selected from the group consisting of C(O)N(H), (H)NC(O),         C(S)N(H), (H)NC(S), S(O)₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and         C(O)N(H)S(O)₂;     -   Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one         carbon of said phenyl or said heteroaryl is substituted by         Q^(s), a carbon two or three contiguous atoms from the point of         attachment of Q^(s) to said phenyl or said heteroaryl to said         phenyl or said heteroaryl is substituted by Q^(b), a carbon         adjacent to the point of attachment of Q^(s) is optionally         substituted by R¹⁷ another carbon adjacent to the point of         attachment of Q^(s) is optionally substituted by R¹⁸, a carbon         adjacent to Q^(b) is optionally substituted by R¹⁶, and another         carbon adjacent to Q^(b) is optionally substituted by R¹⁹;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, nitro, alkoxyamino,         alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl,         haloalkanoyl, alkyl, alkenyl, halo, haloalkyl, haloalkoxy,         hydroxyalkyl, aminoalkyl, haloalkoxyalkyl, carboalkoxy, and         cyano;     -   R¹⁶ or R¹⁹ is optionally selected from the group consisting of         NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹,         aminoalkyl, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and         C(NR²⁵)NR²³R²⁴, with the proviso that no more than one of R²⁰         and R²¹ is selected from the group consisting of hydroxy, amino,         alkylamino, and dialkylamino at the same time, with the further         proviso that no more than one of R²³ and R²⁴ is selected from         the group consisting of hydroxy, amino, alkylamino, and         dialkylamino at the same time;     -   R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from         the group consisting of hydrido, alkyl, hydroxy, aminoalkyl,         amino, dialkylamino, alkylamino, and hydroxyalkyl;     -   Q^(S) is selected from the group consisting of a bond,         (C³⁷R³⁸)_(b) wherein b is an integer selected from 1 through 4,         and (CH(R¹⁴))_(c)—W¹—(CH(R¹⁵))^(d) wherein c and d are integers         independently selected from 1 through 3 and W¹ is selected from         the group consisting of C(O)N(R¹⁴), (R¹⁴)NC(O), S(O), S(O)₂,         S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, and N(R¹⁴), with the proviso that R¹⁴         is selected from other than halo when directly bonded to N, and         with the additional proviso that (CR³⁷R³⁸)_(b) and (CH(R¹⁴))_(c)         are bonded to E⁰;     -   R³⁷ and R³⁸ are independently selected from the group consisting         of hydrido, alkyl, and haloalkyl;     -   R³⁸ is optionally aroyl or heteroaroyl, wherein R³⁸ is         optionally substituted with one or more substituents selected         from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹;     -   Y⁰ is optionally Y^(AT) wherein Y^(AT) is Q^(b)-Q^(s);     -   Y⁰ is optionally Q^(b)-Q^(ss) wherein Q^(ss) is         (CH(R¹⁴))_(e)—W²—(CH(R¹⁵))_(h), wherein e and h are         independently 1 or 2 and W² is CR^(4a)═CR^(4b), with the proviso         that (CH(R¹⁴))_(e) is bonded to E⁰;     -   Y⁰ is optionally Q^(b)-Q^(ssss) or Q^(b)-Q^(ssssr) wherein         Q^(ssss) is (CH(R³⁸))_(r)—W⁵, Q^(ssssr) is (CH(R³⁸))_(r)—W⁶, r         is 1 or 2, W⁵ and W⁶ are independently selected from the group         consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl,         1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl,         3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl,         2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl,         2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl,         3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl,         2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl,         3,4-benzothiophenyl, 3,% benzothiophenyl, 3,6-benzothiophenyl,         3,7-benzothiophenyl, 2,7-imidazo(1,2-a)pyridinyl,         3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl,         3,6-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl,         2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl,         3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl,         1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl,         2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl,         3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl,         2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl,         3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl,         3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl,         1,7-naphthyl, 1,8-naphthyl, 2,4-naphthyl, 2,5-naphthyl,         2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl,         2,5-quinolinyl, 2,5-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl,         3,4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl,         3,8-quinolinyl, 4,5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl,         4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl,         1,6-isoquinolinyl, 1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4         isoquinolinyl, 3,5-isoquinolinyl, 3,6 isoquinolinyl,         3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl,         4,6-isoquinolinyl, 4,7-isoquinolinyl,     -   4,8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl,         3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl, 4,5-cinnolinyl,         4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each         carbon and hyrido containing nitrogen member of the ring of the         W⁵ and of the ring of the W⁶, other than the points of         attachment of W⁵ and W⁶ is optionally substituted with one or         more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the         proviso that Q^(b) is bonded to lowest number substituent         position of each W⁵, with the further proviso that Q^(b) is         bonded to highest number substituent position of each W⁶, and         with the additional proviso that (CH(R³⁸))_(r) is bonded to E⁰.

In a more preferred embodiment of a compound of Formula I, said compound is the Formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to A is optionally substituted by R³²,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R³⁶, a carbon adjacent         to R³² and two atoms from the carbon at the point of attachment         is optionally substituted by R³³, a carbon adjacent to R³⁶ and         two atoms from the carbon at the point of attachment is         optionally substituted by R³⁵, and any carbon adjacent to both         R³³ and R³⁵ is optionally substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, acetamido, haloacetamido, amidino,         guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy,         hydroxy, amino, alkoxyamino, haloalkanoyl, nitro, alkylamino,         alkylthio, aryl, aralkyl, cycloalkyl, cycloalkylalkyl,         heteroaryl, heterocyclyl, alkylsulfonamido, amidosulfonyl,         alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy,         hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy,         carboxy, carboxamido, cyano, and Q^(b);     -   B is optionally selected from the group consisting of hydrido,         trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl,         C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group         B is optionally substituted at any carbon up to and including 6         atoms from the point of attachment of B to A with one or more of         the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;     -   B is optionally a C3-C12 cycloalkyl or a C4-C9 saturated         heterocyclyl, wherein each ring carbon is optionally substituted         with R³³, a ring carbon other than the ring carbon at the point         of attachment of B to A is optionally substituted with oxo         provided that no more than one ring carbon is substituted by oxo         at the same time, ring carbons and a nitrogen adjacent to the         carbon atom at the point of attachment are optionally         substituted with R⁹ or R¹³, a ring carbon or nitrogen atom         adjacent to the R⁹ position and two atoms from the point of         attachment is optionally substituted with R¹⁰, a ring carbon or         nitrogen atom adjacent to the R¹³ position and two atoms from         the point of attachment is optionally substituted with R¹², a         ring carbon or nitrogen atom three atoms from the point of         attachment and adjacent to the R¹⁰ position is optionally         substituted with R¹¹, a ring carbon or nitrogen atom three atoms         from the point of attachment and adjacent to the R¹² position is         optionally substituted with R³³, and a ring carbon or nitrogen         atom four atoms from the point of attachment and adjacent to the         R¹¹ and R³³ positions is optionally substituted with R³⁴;     -   R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the         group consisting of hydrido, acetamido, haloacetamido,         alkoxyamino, alkanoyl, haloalkanoyl, amidino, guanidino,         alkylenedioxy, haloalkylthio, alkoxy, cycloalkoxy,         cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy,         heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy,         amino, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino,         heteroarylamino, heteroaralkylamino, heterocyclylamino,         heterocyclylalkylamino, alkylthio, alkylsulfinyl, arylsulfinyl,         aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl,         alkylsulfamido, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl,         cycloalkylsulfonyl, heteroarylsulfonyl, amidosulfonyl, alkyl,         aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl,         heterocyclyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl,         hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy,         carboxyalkyl, carboxamido, and cyano;     -   A is bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa         is an integer selected from 0 through 3, and W⁷ is selected from         the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and         N(R⁷), with the proviso that W⁷ is bonded to the N(H) on the         4-pyrone ring;     -   R⁷ is selected from the group consisting of hydrido, hydroxy and         alkyl;     -   R¹⁵ is selected from the group consisting of hydrido, hydroxy,         halo, alkyl, and haloalkyl;     -   X⁰ is selected from the group consisting of hydrido, alkyl,         cyano, halo, haloalkyl, haloalkoxy, amino, aminoalkyl,         alkylamino, amidino, hydroxy, hydroxyamino, alkoxy,         hydroxyalkyl, alkoxyamino, thiol, and alkylthio;     -   R² is Z⁰-Q;     -   Z⁰ is selected from the group consisting of a bond,         (CR⁴²R⁴²)_(q) wherein q is 1 or 2, and         (CH(R⁴¹))_(g)—W⁰—(CH(R⁴²))_(p) wherein g and p are integers         independently selected from 0 through 3 and W⁰ is selected from         the group consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹);     -   Z⁰ is optionally (CH(R⁴¹))_(e)—W²²—(CH(R⁴²))_(h) wherein e and h         are independently 0 or 1 and W²² is selected from the group         consisting of CR⁴¹═CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl,         1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl,         1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl,         2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl,         1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl,         2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl,         2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl,         3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl,         2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl,         3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl,         2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, wherein Z⁰ is         directly bonded to the 4-pyrone ring and W²² is optionally         substituted with one or more substituents selected from the         group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³;     -   R⁴¹ and R⁴² are independently selected from the group consisting         of hydrido, hydroxy, alkyl, and amino;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R¹³, a carbon adjacent         to R⁹ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹², and any carbon adjacent to both         R¹⁰ and R¹² is optionally substituted by R¹¹;     -   Q is optionally hydrido with the proviso that Z⁰ is other than a         bond;     -   K is CR^(4a)R^(4b);     -   R^(4a) and R^(4b) are independently selected from the group         consisting of hydrido, hydroxyalkyl, alkyl, alkoxyalkyl,         alkylthioalkyl, and haloalkyl;     -   E⁰ with the proviso that K is CR^(4a)R^(4b), is E¹ wherein E¹ is         selected from the group consisting of a covalent single bond,         C(O)N(H), (H)NC(O), S(O)₂N(H), and N(H)S(O)₂;     -   K is optionally (CH(R¹⁴))_(j)-T wherein j is 0 or 1 and T is a         bond or N(R⁷) with the proviso that (CH(R¹⁴))_(j) is bonded to         the phenyl ring;

-   R¹⁴ is hydrido or halo;     -   E⁰, with the proviso that K is (CH(R¹⁴))_(j)-T, is E² wherein E²         is selected from the group consisting of C(O)N(H), (H)NC(O),         C(S)N(H), (H)NC(S), S(O)₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and         C(O)N(H)S(O)₂;     -   Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one         carbon of said phenyl or said heteroaryl is substituted by         Q^(s), a carbon two or three atoms from the point of attachment         of Q^(s) to said phenyl or said heteroaryl is substituted by         Q^(b), a carbon adjacent to the point of attachment of Q^(s) is         optionally substituted by R¹⁷, another carbon adjacent to the         point of attachment of Q^(s) is optionally substituted by R¹⁸, a         carbon adjacent to Q^(b) is optionally substituted by R¹⁶, and         another carbon adjacent to Q^(b) is optionally substituted by         R¹⁹;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, alkoxyamino, alkylamino,         alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl,         alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl,         and cyano;     -   R¹⁶ or R¹⁹ is optionally selected from the group consisting of         NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso         that no more than one of R²⁰ and R²¹ is selected from the group         consisting of hydroxy, amino, alkylamino, and dialkylamino at         the same time, with the further proviso that no more than one of         R²³ and R²⁴ is selected from the group consisting of hydroxy,         amino, alkylamino, and dialkylamino at the same time;     -   R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from         the group consisting of hydrido, alkyl, hydroxy, amino,         alkylamino and dialkylamino;     -   Q^(s) is selected from the group consisting of a bond,         (CR³⁷R³⁸)_(b) wherein b is an integer selected from 1 through 4,         and (CH(R¹⁴))_(c)—W¹—(CH(R¹⁵))_(d) wherein c and d are integers         independently selected from 1 through 3 and W¹ is selected from         the group consisting of C(O)N(R¹⁴), (R¹⁴)NC(O), S(O), S(O)₂,         S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, and N(R¹⁴), with the proviso that R¹⁴         is selected from other than halo when directly bonded to N, and         with the additional proviso that (CR³⁷R³⁸)_(b) and         (CR³⁷R³⁸)_(b), and (CH(R¹⁴))_(c) are bonded to E⁰;     -   R³⁷ and R³⁸ are independently selected from the group consisting         of hydrido, alkyl, and haloalkyl;     -   R³⁸ is optionally aroyl or heteroaroyl, wherein R³⁸ is         optionally substituted with one or more substituents selected         from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹;     -   Y⁰ is optionally Y^(AT) wherein Y^(AT) is Q^(b)-Q^(s);     -   Y⁰ is optionally Q^(b)-Q^(ss) wherein Q^(ss) is         (CH(R¹⁴))^(e)—W²—(CH(R¹⁵))_(h), wherein e and h are         independently 1 or 2 and W² is CR^(4a)═CR^(4b) with the proviso         that (CH(R¹⁴))_(e) is bonded to E⁰.

In an even more preferred embodiment of a compound of Formula I, said compound is the formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to A is optionally substituted by R³²,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R³⁶, a carbon adjacent         to R³² and two atoms from the carbon at the point of attachment         is optionally substituted by R³³, a carbon adjacent to R³⁶ and         two atoms from the carbon at the point of attachment is         optionally substituted by R³⁵, and any carbon adjacent to both         R³³ and R³⁵ is optionally substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, acetamido, haloacetamido, amidino,         guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino,         alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy,         hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy,         carboxamido, cyano, and Q^(b);     -   A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa         is an integer selected from 0 through 3, and W⁷ is (R⁷)NC(O) or         N(R⁷);     -   R⁷ is selected from the group consisting of hydrido, hydroxy and         alkyl;

-   R¹⁵ is selected from the group consisting of hydrido, halo, alkyl,     and haloalkyl;     -   X⁰ is selected from the group consisting of hydrido, amino,         alkyl, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy,         hydroxyalkyl, and alkylthio;     -   R² is Z⁰-Q;     -   Z₀ is selected from the group consisting of a bond, CH₂, CH₂CH₂,         W⁰—(CH(R⁴²))_(p) wherein p is 0 or 1 and W⁰ is selected from the         group consisting of O, S, and N(R⁴¹);     -   R⁴¹ and R⁴² are independently hydrido or alkyl;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R¹³, a carbon adjacent         to R⁹ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹², and any carbon adjacent to both         R¹⁰ and R¹² is optionally substituted by R¹¹;     -   R⁹, R¹¹, and R¹³ are independently selected from the group         consisting of hydrido, hydroxy, amino, amidino, guanidino,         alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl,         alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl,         haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy,         carboxamido, and cyano;     -   R¹⁰ and R¹² are independently selected from the group consisting         of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl,         aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl,         heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy,         aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy,         heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino,         arylamino, aralkylamino, heteroarylamino, heteroaralkylamino,         heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido,         amidosulfonyl, arylsulfinyl, aralkylsulfinyl,         cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl,         aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl,         hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy,         carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano;     -   Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one         carbon of said phenyl or said heteroaryl is substituted by         Q^(s), a carbon two or three atoms from the point of attachment         of Q^(s) to said phenyl or said heteroaryl is substituted by         Q^(b), a carbon adjacent to the point of attachment of Q^(s) is         optionally substituted by R¹⁷, another carbon adjacent to the         point of attachment of Q^(s) is optionally substituted by R¹⁸, a         carbon adjacent to Q^(b) is optionally substituted by R¹⁶, and         another carbon adjacent to Q^(b) is optionally substituted by         R¹⁹;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio,         alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl,         halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and         cyano;     -   R¹⁶ or R¹⁹ is optionally NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴, with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         and C(NR²⁵)NR²³R²⁴, with the proviso that no more than one of         R²⁰ and R²¹ is hydroxy at the same time and with the further         proviso that no more than one of R²³ and R²⁴ is hydroxy at the         same time;     -   R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the         group consisting of hydrido, alkyl, and hydroxy;     -   Q^(s) is selected from the group consisting of a bond, CH₂, and         CH₂CH₂.

In another even more preferred embodiment of a compound of Formula 1, said compound is the Formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of hydrido, C2-C8 alkyl,         C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each         member of group B is optionally substituted at any carbon up to         and including 6 atoms from the point of attachment of B to A         with one or more of the group consisting of R³², R³³, R³⁴, R³⁵,         and R³⁶;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, acetamido, haloacetamido, amidino,         guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino,         alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy,         hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy,         carboxamido, cyano, and Q^(b);     -   A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa         is an integer selected from 0 through 3, and W⁷ is (R⁷)NC(O) or         N(R⁷);     -   R⁷ is selected from the group consisting of hydrido, hydroxy and         alkyl;     -   R¹⁵ is selected from the group consisting of hydrido, halo,         alkyl, and haloalkyl;     -   X⁰ is selected from the group consisting of hydrido, amino,         alkyl, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy,         hydroxyalkyl, and alkylthio;     -   R² is Z⁰-Q;     -   Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂,         W⁰—(CH(R⁴²))_(p) wherein p is 0 or I and W⁰ is selected from the         group consisting of O, S, and N(R⁴¹);     -   R⁴¹ and R⁴² are independently hydrido or alkyl;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R¹³, a carbon adjacent         to R⁹ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹², and any carbon adjacent to both         R¹⁰ and R¹² is optionally substituted by R¹¹;     -   R⁹, R¹¹, and R¹³ are independently selected from the group         consisting of hydrido, hydroxy, amino, amidino, guanidino,         alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl,         alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl,         haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy,         carboxamido, and cyano;     -   R¹⁰ and R¹² are independently selected from the group consisting         of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl,         aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl,         heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy,         aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy,         heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino,         arylamino, aralkyl amino, heteroarylamino, heteroaralkylamino,         heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido,         amidosulfonyl, arylsulfinyl, aralkylsulfinyl,         cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl,         aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl,         hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy,         carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano;     -   Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one         carbon of said phenyl or said heteroaryl is substituted by         Q^(s), a carbon two or three atoms from the point of attachment         of Q^(s) to said phenyl or said heteroaryl is substituted by         Q^(b), a carbon adjacent to the point of attachment of Q^(s) is         optionally substituted by R¹⁷, another carbon adjacent to the         point of attachment of Q^(s) is optionally substituted by R¹⁸, a         carbon adjacent to Q^(b) is optionally substituted by R¹⁶, and         another carbon adjacent to Q^(b) is optionally substituted by         R¹⁹;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio,         alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl,         halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and         cyano;     -   R¹⁶ or R¹⁹ is optionally selected from the group consisting of         NR²⁴R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the proviso         that no more than one of R²⁰ and R²¹ is hydroxy at the same time         and with the further proviso that no more than one of R²³ and         R²⁴ is hydroxy at the same time;     -   R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from         the group consisting of hydrido, alkyl, and hydroxy;     -   Q^(s) is selected from the group consisting of a bond, CH₂, and         CH₂CH₂.

In still another even more preferred embodiment of a compound of Formula I, said compound is the Formula:

-   -   or a pharmaceutically acceptable salt thereof, wherein;     -   B is a C3-C7 cycloalkyl or a C4-C6 saturated heterocyclyl,         wherein each ring carbon is optionally substituted with R³³, a         ring carbon other than the ring carbon at the point of         attachment of B to A is optionally substituted with oxo provided         that no more than one ring carbon is substituted by oxo at the         same time, ring carbons and a nitrogen adjacent to the carbon         atom at the point of attachment are optionally substituted with         R⁹ or R¹³, a ring carbon or nitrogen adjacent to the R⁹ position         and two atoms from the point of attachment is optionally         substituted with R¹⁰, a ring carbon or nitrogen adjacent to the         R¹³ position and two atoms from the point of attachment is         optionally substituted with R¹², a ring carbon or nitrogen three         atoms from the point of attachment and adjacent to the R¹⁰         position is optionally substituted with R¹¹, a ring carbon or         nitrogen three atoms from the point of attachment and adjacent         to the R¹² position is optionally substituted with R³³, and a         ring carbon or nitrogen four atoms from the point of attachment         and adjacent to the R¹¹ and R³³ positions is optionally         substituted with R³⁴;     -   R⁹, R¹¹, and R¹³ are independently selected from the group         consisting of hydrido, hydroxy, amino, amidino, guanidino,         alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl,         alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl,         haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy,         carboxamido, and cyano;     -   R¹⁰ and R¹² are independently selected from the group consisting         of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl,         aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl,         heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy,         aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy,         heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino,         arylamino, aralkylamino, heteroarylamino, heteroaralkylamino,         heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido,         amidosulfonyl, arylsulfinyl, aralkylsulfinyl,         cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl,         aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl,         hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy,         carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano;     -   R³³ and R³⁴ are independently selected from the group consisting         of hydrido, acetamido, haloacetamido, amidino, guanidino,         alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio,         amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl,         hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, and cyano;     -   R³³ is optionally Q^(b);

A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is (R⁷)NC(O) or N(R⁷);

-   -   R⁷ is selected from the group consisting of hydrido, hydroxy and         alkyl;     -   R¹⁵ is selected from the group consisting of hydrido, halo,         alkyl, and haloalkyl;     -   X⁰ is selected from the group consisting of hydrido, amino,         alkyl, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy,         hydroxyalkyl, and alkylthio;     -   R² is Z⁰-Q;     -   Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂,         W⁰—(CH(R⁴²))_(p) wherein p is 0 or 1 and W⁰ is selected from the         group consisting of O, S, and N(R⁴¹);     -   R⁴¹ and R⁴² are independently hydrido or alkyl;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R¹³, a carbon adjacent         to R⁹ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹², and any carbon adjacent to both         R¹⁰ and R¹² is optionally substituted by R¹¹;     -   Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one         carbon of said phenyl or said heteroaryl is substituted by         Q^(s), a carbon two or three atoms from the point of attachment         of Q^(s) to said phenyl or said heteroaryl is substituted by         Q^(b), a carbon adjacent to the point of attachment of Q^(s) is         optionally substituted by R¹⁷, another carbon adjacent to the         point of attachment of Q^(s) is optionally substituted by R¹⁸, a         carbon adjacent to Q^(b) is optionally substituted by R¹⁶, and         another carbon adjacent to Q^(b) is optionally substituted by         R¹⁹;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio,         alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl,         halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and         cyano;     -   R¹⁶ or R¹⁹ is optionally NR²⁰R²¹ or and C(NR²⁵)NR²³R²⁴, with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         and C(NR²⁵)NR²³R²⁴, with the proviso that no more than one of         R²⁰ and R²¹ is hydroxy at the same time and with the further         proviso that no more than one of R²³ and R²⁴ is hydroxy at the         same time;     -   R²⁰, R²¹, R²³, R², and R²⁵ are independently selected from the         group consisting of hydrido, alkyl, and hydroxy;     -   Q^(s) is selected from the group consisting of a bond, CH₂, and         CH₂CH₂.

In an additional even more preferred embodiment of a compound of Formula 1, said compound is the Formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of hydrido,         trialkylsilyl, C₂-C₄ alkyl, C3-C5 alkylenyl, C3-C4 alkenyl,         C3-C4 alkynyl, and C2-C4 haloalkyl, wherein each member of group         B is optionally substituted at any carbon up to and including 3         atoms from the point of attachment of B to A with one or more of         the group consisting of R³², R³³, and R³⁴;     -   R³², R³³, and R³⁴ are independently selected from the group         consisting of hydrido, acetamido, haloacetamido, amidino,         guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino,         alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy,         hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy,         carboxamido, and cyano;     -   A is (CH(R¹⁵))_(pa)—N(R⁷) wherein pa is an integer selected from         0 through 2 and R⁷ is hydrido or alkyl;     -   R¹⁵ is selected from the group consisting of hydrido, halo,         alkyl, and haloalkyl;     -   X⁰ is selected from the group consisting of hydrido, amino,         alkyl, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy,         hydroxyalkyl, and alkylthio;     -   R² is Z⁰-Q;     -   Z⁰ is a bond or CH₂;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R¹³, a carbon adjacent         to R⁹ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹², and any carbon adjacent to both         R¹⁰ and R¹² is optionally substituted by R¹¹;     -   R⁹, R¹¹, and R¹³ are independently selected from the group         consisting of hydrido, hydroxy, amino, amidino, guanidino,         alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl,         alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl,         haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy,         carboxamido, and cyano;     -   R¹⁰ and R¹² are independently selected from the group consisting         of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl,         aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl,         heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy,         aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy,         heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino,         arylamino, aralkylamino, heteroarylamino, heteroaralkylamino,         heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido,         amidosulfonyl, arylsulfinyl, aralkylsulfinyl,         cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl,         aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl,         hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy,         carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano;     -   Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one         carbon of said phenyl or said heteroaryl is substituted by         Q^(s), a carbon two or three atoms from the point of attachment         of Q^(s) to said phenyl or said heteroaryl is substituted by         Q^(b), a carbon adjacent to the point of attachment of Q^(s) is         optionally substituted by R¹⁷, another carbon adjacent to the         point of attachment of Q^(s) is optionally substituted by R¹⁸, a         carbon adjacent to Q^(b) is optionally substituted by R¹⁶, and         another carbon adjacent to Q^(b) is optionally substituted by         R¹⁹;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio,         alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl,         halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and         cyano;     -   R¹⁶ or R¹⁹ is optionally selected from the group consisting of         NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴R²⁴, with         the proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously         hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the proviso         that no more than one of R²⁰ and R²¹ is hydroxy at the same time         and with the further proviso that no more than one of R²³ and         R²⁴ is hydroxy at the same time;     -   R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from         the group consisting of hydrido, alkyl, and hydroxy;     -   Q^(s) is selected from the group consisting of a bond, CH₂, and         CH₂CH₂.

In a fifth even more preferred embodiment of a compound of Formula I, said compound is Formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to A is optionally substituted by R³²,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R³⁶, a carbon adjacent         to R³² and two atoms from the carbon at the point of attachment         is optionally substituted by R³³, a carbon adjacent to R³⁶ and         two atoms from the carbon at the point of attachment is         optionally substituted by R³⁵, and any carbon adjacent to both         R³³ and R³⁵ is optionally substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, acetamido, haloacetamido, amidino,         guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy,         hydroxy, amino, alkoxyamino, haloalkanoyl, nitro, alkylamino,         alkylthio, aryl, aralkyl, cycloalkyl, cycloalkylalkyl,         heteroaryl, heterocyclyl, alkylsulfonamido, amidosulfonyl,         alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy,         hydroxyalkyl, alkylamino, carboalkoxy, carboxy, carboxamido,         cyano, and Q^(b);     -   B is optionally selected from the group consisting of hydrido,         trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl,         C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group         B is optionally substituted at any carbon up to and including 6         atoms from the point of attachment of B to A with one or more of         the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;     -   B is optionally a C3-C12 cycloalkyl or a C4-C9 saturated         heterocyclyl, wherein each ring carbon is optionally substituted         with R³³, a ring carbon other than the ring carbon at the point         of attachment of B to A is optionally substituted with oxo         provided that no more than one ring carbon is substituted by oxo         at the same time, ring carbons and a nitrogen adjacent to the         carbon atom at the point of attachment are optionally         substituted with R⁹ or R¹³, a ring carbon or nitrogen adjacent         to the R⁹ position and two atoms from the point of attachment is         optionally substituted with R¹⁰, a ring carbon or nitrogen         adjacent to the R¹³ position and two atoms from the point of         attachment is optionally substituted with R¹², a ring carbon or         nitrogen three atoms from the point of attachment and adjacent         to the R¹⁰ position is optionally substituted with R¹¹, a ring         carbon or nitrogen three atoms from the point of attachment and         adjacent to the R¹² position is optionally substituted with R³³,         and a ring carbon or nitrogen four atoms from the point of         attachment and, adjacent to the R¹¹ and R³³ positions is         optionally substituted with R³⁴;     -   R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the         group consisting of hydrido, acetamido, haloacetamido,         alkoxyamino, alkanoyl, haloalkanoyl, amidino, guanidino,         alkylenedioxy, haloalkylthio, alkoxy, cycloalkoxy,         cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy,         heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy,         amino, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino,         heteroarylamino, heteroaralkylamino, heterocyclylamino,         heterocyclylalkylamino, alkylthio, alkylsulfinyl, arylsulfinyl,         aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl,         alkylsulfamido, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl,         cycloalkylsulfonyl, heteroarylsulfonyl, amidosulfonyl, alkyl,         aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl,         heterocyclyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl,         hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy,         carboxyalkyl, carboxamido, and cyano;     -   A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa         is an integer selected from 0 through 3, and W⁷ is selected from         the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and         N(R⁷);     -   R⁷ is selected from the group consisting of hydrido, hydroxy and         alkyl     -   R¹⁵ is selected from the group consisting of hydrido, hydroxy,         halo, alkyl, and haloalkyl;     -   X⁰ is selected from the group consisting of hydrido, amino,         alkyl cyano, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy,         alkoxy, hydroxyalkyl, and alkylthio;     -   R² is Z⁰-Q;     -   Z⁰ is selected from the group consisting of a bond,         (CR⁴¹R⁴²)_(q) wherein q is 1 or 2, and (CH(R⁴¹)),         —W⁰—(CH(R⁴²))_(p) wherein g and p are integers independently         selected from 0 through 3 and W⁰ is selected from the group         consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹);     -   Z⁰ is optionally (CH(R⁴¹))_(e)—W²²—(CH(R⁴²))_(h) wherein e and h         are independently 0 or 1 and W²² is selected from the group         consisting of CR⁴¹═CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl,         1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl,         1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl,         2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl,         1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl,         2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl,         2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl,         3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl,         2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl,         3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl,         2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, wherein Z⁰ is         directly bonded to the 4-pyrone ring and W²² is optionally         substituted with one or more substituents selected from the         group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³;     -   R⁴¹ and R⁴² are independently selected from the group consisting         of hydrido, hydroxy, alkyl, and amino;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R¹³, a carbon adjacent         to R⁹ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹², and any carbon adjacent to both         R¹⁰ and R¹² is optionally substituted by R¹¹, with the proviso         that Q is other than a phenyl when Z⁰ is a bond;     -   Q is optionally hydrido with the proviso that Z⁰ is selected         from other than a bond;     -   K is CHR^(4a) wherein R^(4a) is selected from the group         consisting of hydrido, hydroxyalkyl, alkyl, alkoxyalkyl,         alkylthioalkyl, and haloalkyl;     -   E⁰ is selected from the group consisting of a bond, C(O)N(H),         (H)NC(O), (R⁷)NS(O)₂, and S(O)₂N(R⁷);     -   Y^(AT) is Q^(b)-Q^(s);     -   Q^(s) is (CR³⁷R³⁸)_(b) wherein b is an integer selected from 1         through 4, R³⁷ is selected from the group consisting of hydrido,         alkyl, and haloalkyl, and R³⁸ is selected from the group         consisting of hydrido, alkyl, haloalkyl, aroyl, and heteroaroyl         with the proviso that there is at least one aroyl or heteroaroyl         substituent, with the further proviso that no more than one         aroyl or heteroaroyl is bonded to (CR³⁷R³⁸)_(b) at the same         time, with the still further proviso that said aroyl and said         heteroaroyl are optionally substituted with one or more         substituents selected from the group consisting of R¹⁶, R¹⁷,         R¹⁸, and R¹⁹ with another further proviso that said aroyl and         said heteroaroyl are bonded to the CR³⁷R³⁸ that is directly         bonded to E⁰, with still another further proviso that no more         than one alkyl or one haloalkyl is bonded to a CR³⁷R³⁸ at the         same time, and with the additional proviso that said alkyl and         haloalkyl are bonded to a carbon other than the one bonding said         aroyl or said heteroaroyl;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, alkoxyamino, alkylamino,         alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl,         alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl,         and cyano;     -   R¹⁶ or R¹⁹ is optionally selected from the group consisting of         NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso         that no more than one of R²⁰ and R²¹ is selected from the group         consisting of hydroxy, amino, alkylamino, and dialkylamino at         the same time and with the further proviso that no more than one         of R²³ and R²⁴ is selected from the group consisting of hydroxy,         amino, alkylamino, and dialkylamino at the same time;     -   R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from         the group consisting of hydrido, alkyl, hydroxy, amino,         alkylamino and dialkylamino.

In a most preferred embodiment of compounds of Formula I, said compound is the Formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to A is optionally substituted by R³²,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R³⁶, a carbon adjacent         to R³² and two atoms from the carbon at the point of attachment         is optionally substituted by R³³, a carbon adjacent to R³⁶ and         two atoms from the carbon at the point of attachment is         optionally substituted by R³⁵, and any carbon adjacent to both         R³³ and R³⁵ is optionally substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, acetamido, haloacetamido, amidino,         guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino,         alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy,         hydroxyalkyl, carboalkoxy, carboxy, carboxamido, cyano, and         Q^(b);     -   A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa         is an integer selected from 0 through 3, and W⁷ is N(R⁷);     -   R⁷ is hydrido or alkyl;     -   R¹⁵ is selected from the group consisting of hydrido, halo,         alkyl, and haloalkyl;     -   X⁰ is selected from the group consisting of hydrido, alkyl,         halo, haloalkyl, aminoalkyl, and hydroxyalkyl;     -   R² is Z⁰-Q;     -   Z⁰ is a bond;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R¹³, a carbon adjacent         to R⁹ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹², and any carbon adjacent to both         R¹⁰ and R¹² is optionally substituted by R¹¹;     -   R⁹, R¹¹, and R¹³ are independently selected from the group         consisting of hydrido, hydroxy, amino, amidino, guanidino,         alkylamino, alkylthio, alkoxy, alkylsulfinyl, alkylsulfonyl,         amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl,         carboxy, carboxamido, and cyano;

-   R¹⁰ and R¹² are independently selected from the group consisting of     hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl,     alkoxy, alkoxyamino, hydroxy, amino, alkylamino, alkylsulfonamido,     amidosulfonyl, hydroxyalkyl, aminoalkyl, halo, haloalkyl,     carboalkoxy, carboxy, carboxamido, carboxyalkyl, and cyano;     -   Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one         carbon of said phenyl or said heteroaryl is substituted by         Q^(s), a carbon two or three atoms from the point of attachment         of Q to said phenyl or said heteroaryl is substituted by Q^(b),         a carbon adjacent to the point of attachment of Q^(s) is         optionally substituted by R¹⁷, another carbon adjacent to the         point of attachment of Q^(s) is optionally substituted by R¹⁸, a         carbon adjacent to Q^(b) is optionally substituted by R¹⁶, and         another carbon adjacent to Q^(b) is optionally substituted by         R¹⁹;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio,         alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl,         halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and         cyano;     -   R¹⁶ or R¹⁹ is optionally NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴, with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         and C(NR²⁵)NR²³R²⁴;     -   R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently hydrido or alkyl;     -   Q^(s) is CH₂.

In a further most preferred embodiment of compounds of Formula I, said compound is the Formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of hydrido, C2-C8 alkyl,         C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each         member of group B is optionally substituted at any carbon up to         and including 6 atoms from the point of attachment of B to A         with one or more of the group consisting of R³², R³³, R³⁴, R³⁵,         and R³⁶;     -   R³², R³³, R₃₄, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, acetamido, haloacetamido, amidino,         guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino,         alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy,         hydroxyalkyl, carboalkoxy, carboxy, carboxamido, cyano, and         Q^(b);     -   A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa         is an integer selected from 0 through 3, and W⁷ is N(R⁷);     -   R⁷ is hydrido or alkyl;     -   R¹⁵ is selected from the group consisting of hydrido, halo,         alkyl, and haloalkyl;     -   X⁰ is selected from the group consisting of hydrido, alkyl,         halo, haloalkyl, aminoalkyl, and hydroxyalkyl;     -   R² is Z⁰-Q;     -   Z⁰ is a bond;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R¹³, a carbon adjacent         to R⁹ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹², and any carbon adjacent to both         R¹⁰ and R¹² is optionally substituted by R¹¹;     -   R⁹, R¹¹, and R¹³ are independently selected from the group         consisting of hydrido, hydroxy, amino, amidino, guanidino,         alkylamino, alkylthio, alkoxy, alkylsulfinyl, alkylsulfonyl,         amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl,         carboxy, carboxamido, and cyano;     -   R¹⁰ and R¹² are independently selected from the group consisting         of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl,         alkoxy, alkoxyamino, hydroxy, amino, alkylamino,         alkylsulfonamido, amidosulfonyl, hydroxyalkyl, aminoalkyl, halo,         haloalkyl, carboalkoxy, carboxy, carboxamido, carboxyalkyl, and         cyano;     -   Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one         carbon of said phenyl or said heteroaryl is substituted by         Q^(s), a carbon two or three atoms from the point of attachment         of Q^(s) to said phenyl or said heteroaryl is substituted by         Q^(b), a carbon adjacent to the point of attachment of Q^(s) is         optionally substituted by R¹⁷, another carbon adjacent to the         point of attachment of Q^(s) is optionally substituted by R¹⁸, a         carbon adjacent to Q^(b) is optionally substituted by R¹⁶, and         another carbon adjacent to Q^(b) is optionally substituted by         R¹⁹;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio,         alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl,         halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and         cyano;     -   R¹⁶ or R¹⁹ is optionally selected from the group consisting of         NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴;     -   R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently hydrido or         alkyl;     -   Q^(s) is CH₂.

In a still further most preferred embodiment of compounds of Formula I, said compound is the Formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is a C3-C7 cycloalkyl or a C4-C6 saturated heterocyclyl,         wherein each ring carbon is optionally substituted with R³³, a         ring carbon other than the ring carbon at the point of         attachment of B to A is optionally substituted with oxo provided         that no more than one ring carbon is substituted by oxo at the         same time, ring carbons and a nitrogen adjacent to the carbon         atom at the point of attachment are optionally substituted with         R⁹ or R¹³, a ring carbon or nitrogen adjacent to the R⁹ position         and two atoms from the point of attachment is optionally         substituted with R¹⁰, a ring carbon or nitrogen adjacent to the         R¹³ position and two atoms from the point of attachment is         optionally substituted with R¹², a ring carbon or nitrogen three         atoms from the point of attachment and adjacent to the R¹⁰         position is optionally substituted with R¹¹, a ring carbon or         nitrogen three atoms from the point of attachment and adjacent         to the R¹² position is optionally substituted with R³³, and a         ring carbon or nitrogen four atoms from the point of attachment         and adjacent to the R¹¹ and R³³ positions is optionally         substituted with R³⁴;     -   R⁹, R¹¹, and R¹³ are independently selected from the group         consisting of hydrido, hydroxy, amino, amidino, guanidino,         alkylamino, alkylthio, alkoxy, alkylsulfinyl, alkylsulfonyl,         amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl,         carboxy, carboxamido, and cyano;     -   R¹⁰ and R¹² are independently selected from the group consisting         of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl,         alkoxy, alkoxyamino, hydroxy, amino, alkylamino,         alkylsulfonamido, amidosulfonyl, hydroxyalkyl, aminoalkyl, halo,         haloalkyl, carboalkoxy, carboxy, carboxamido, carboxyalkyl, and         cyano;     -   R³³ and R³⁴ are independently selected from the group consisting         of hydrido, acetamido, haloacetamido, amidino, guanidino,         alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio,         amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl,         carboalkoxy, carboxy, carboxamido, and cyano;     -   R³³ is optionally Q^(b);     -   A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa         is an integer selected from 0 through 3, and W⁷ is N(R⁷);     -   R⁷ is hydrido or alkyl;     -   R¹⁵ is selected from the group consisting of hydrido, halo,         alkyl, and haloalkyl;     -   X⁰ is selected from the group consisting of hydrido, alkyl,         halo, haloalkyl, aminoalkyl, and hydroxyalkyl;     -   R² is Z⁰-Q;     -   Z⁰ is a bond;     -   Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a         carbon adjacent to the carbon at the point of attachment of said         phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹,         the other carbon adjacent to the carbon at the point of         attachment is optionally substituted by R¹³, a carbon adjacent         to R⁹ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹², and any carbon adjacent to both         R¹⁰ and R¹² is optionally substituted by R¹¹;     -   Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one         carbon of said phenyl or said heteroaryl is substituted by         Q^(s), a carbon two or three atoms from the point of attachment         of Q^(s) to said phenyl or said heteroaryl is substituted by         Q^(b), a carbon adjacent to the point of attachment of Q^(s) is         optionally substituted by R¹⁷, another carbon adjacent to the         point of attachment of Q^(s) is optionally substituted by R¹⁸, a         carbon adjacent to Q^(b) is optionally substituted by R¹⁶, and         another carbon adjacent to Q^(b) is optionally substituted by         R¹⁹;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy,         haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio,         alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl,         halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and         cyano;     -   R¹⁶ or R¹⁹ is optionally NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴, with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         and C(NR²⁵)NR²³R²⁴;     -   R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently hydrido or alkyl;         Q^(s) is CH₂.

In a preferred specific embodiment of Formula I, compounds have the formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         1,2,4-triazol-3-yl, 1,2,4-triazol-5-yl, 1,2,4-oxadiazol-3-yl,         1,2,4-oxadiazol-5-yl, 1,3,4-oxadiazol-3-yl,         1,3,4-oxadiazol-5-yl, 3-isothiazolyl, 5-isothiazolyl,         2-oxazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl,         3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl,         5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, 1,3,5-triazin-2-yl,         1,2,4-triazin-3-yl, 1,2,4-triazin-5-yl, 1,2,4-triazinyl,         1,2,3-triazin-yl, and 1,2,3-triazin-5-yl, wherein a carbon         adjacent to the carbon at the point of attachment is optionally         substituted by R³², the other carbon adjacent to the carbon at         the point of attachment is optionally substituted by R³⁶, a         carbon adjacent to R³² and two atoms from the carbon at the         point of attachment is optionally substituted by R³³, a carbon         adjacent to R³⁶ and two atoms from the carbon at the point of         attachment is optionally substituted by R³⁵, and any carbon         adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, amidino, guanidino, carboxy,         methyl, ethyl, isopropyl, propyl, methoxy, ethoxy, isopropoxy,         propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido,         trifluoroacetamido, nitro, aminomethyl, 1-aminoethyl,         2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino,         methylthio, ethylthio, isopropylthio, trifluoromethylthio,         trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl,         N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, acetyl,         propanoyl, trifluoroacetyl, pentafluoropropanoyl, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl,         2,2,2-trifluoro-1-trifluoromethyl-1-hydroxyethyl, carboxymethyl,         methoxycarbonyl, ethoxycarbonyl, amidocarbonyl,         N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and         Q^(b);     -   B is selected from the group consisting of hydrido,         trimethylsilyl, ethyl, 2-propenyl, 2-propynyl, propyl,         isopropyl, butyl, 2-butenyl, 3-butenyl, 2-butynyl, sec-butyl,         tert-butyl, isobutyl, 2-methylpropenyl, 1-pentyl, 2-pentenyl,         3-pentenyl, 4-pentenyl, 2-pentynyl, 3-pentynyl, 2-pentyl,         1-methyl-2-butenyl, 1-methyl-3-butenyl, 1-methyl-2-butynyl,         3-pentyl, 1-ethyl-2-propenyl, 2-methylbutyl, 2-methyl-2-butenyl,         2-methyl-3-butenyl, 2-methyl-3-butynyl, 3-methylbutyl,         3-methyl-2-butenyl, 3-methyl-3-butenyl, 1-hexyl, 2-hexenyl,         3-hexenyl, 4-hexenyl, 5-hexenyl, 2-hexynyl, 3-hexynyl,         4-hexynyl, 2-hexyl, 1-methyl-2-pentenyl, 1-methyl-3-pentenyl,         1-methyl-pentenyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl,         3-hexyl, 1-ethyl-2-butenyl, 1-ethyl-3-butenyl,         1-propyl-2-propenyl, 1-ethyl-2-butynyl, 1-heptyl, 2-heptenyl,         3-heptenyl, 4-heptenyl, 5-heptenyl, 6-heptenyl, 2-heptynyl,         3-heptynyl, 4-heptynyl, 5-heptynyl, 2-heptyl,         1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methyl-hexenyl,         1-methyl-5-hexenyl, 1-methyl-2-hexynyl, 1-methyl-3-hexynyl,         1-methyl-4-hexynyl, 3-heptyl, 1-ethyl-2-pentenyl,         1-ethyl-3-pentenyl, 1-ethyl-4-pentenyl, 1-butyl-2-propenyl,         1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 1-octyl, 2-octenyl,         3-octenyl, 4-octenyl, 5-octenyl, 6-octenyl, 7-octenyl,         2-octynyl, 3-octynyl, 4-octynyl, 5-octynyl, 6-octynyl, 2-octyl,         1-methyl-2-heptenyl, 1-methyl-3-heptenyl, 1-methyl-4-heptenyl,         1-methyl-5-heptenyl, 1-methyl-6-heptenyl, 1-methyl-2-heptynyl,         1-methyl-3-heptynyl, 1-methyl-4-heptenyl, 1-methyl-5-heptenyl,         1-methyl-6-heptenyl, 1-methyl-2-heptenyl, 1-methyl-3-heptynyl,         1-methyl-heptynyl, 1-methyl-5-heptynyl, 3-octyl,         1-ethyl-2-hexenyl, 1-ethyl-3-hexenyl, 1-ethyl-4-hexenyl,         1-ethyl-2-hexynyl, 1-ethyl-3-hexynyl, 1-ethyl-hexynyl,         1-ethyl-5-hexenyl, 1-pentyl-2-propenyl, 4-octyl,         1-propyl-2-pentenyl, 1-propyl-3-pentenyl, 1-propyl-4-pentenyl,         1-butyl-2-butenyl, 1-propyl-2-pentynyl, 1-propyl-3-pentynyl,         1-butyl-2-butynyl, 1-butyl-3-butenyl, 2,2,2-trifluoroethyl,         2,2-difluoropropyl, 4-trifluoromethyl-5,5,5-trifluoropentyl,         4-triflucromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and         3,3,3-trifluoropropyl, wherein each member of group B is         optionally substituted at any carbon up to and including 5 atoms         from the point of attachment of B to A with one or more of the         group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;     -   B is optionally selected from the group consisting of         cyclopropyl, cyclobutyl, oxetan-2-yl, oxetan-3-yl,         azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, thiaetan-2-yl,         thiaetan-3-yl, cyclopentyl, cyclohexyl, adamantyl, norbornyl,         3-trifluoromethylnorbornyl, 7-oxabicyclo[2.2.1]heptan-2-yl,         bicyclo[3.1.0]hexan-6-yl, cycloheptyl, cyclooctyl,         2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl,         2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl,         4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl,         2-dioxanyl, 4H-2-pyranyl, 4H-3-pyranyl, 4H-4-pyranyl,         4H-pyran-4-one-2-yl, 4H-pyran-4-one-3-yl, 2-tetrahydrofuranyl,         3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl,         4-tetrahydropyranyl, 2-tetrahydrothienyl, and         3-tetrahydrothienyl, wherein each ring carbon is optionally         substituted with R³³, a ring carbon and nitrogen atoms adjacent         to the carbon atom at the point of attachment is optionally         substituted with R⁹ or R¹³, a ring carbon or nitrogen atom         adjacent to the R⁹ position and two atoms from the point of         attachment is optionally substituted with R¹⁰, and a ring carbon         or nitrogen atom adjacent to the R¹³ position and two atoms from         the point of attachment is optionally substituted with R¹²;     -   R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the         group consisting of hydrido, amidino, guanidino, carboxy,         carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy,         ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino,         ethoxyamino, acetamido, trifluoroacetamido, aminomethyl,         1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino,         N-ethylamino, methanesulfonamido, amidosulfonyl,         N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl,         methoxycarbonyl, ethoxycarbonyl, amidocarbonyl,         N-methylamidocarbonyl, N,N-dimethylamidocarbonyl,         N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl,         N-(3-fluorobenzyl)amidocarbonyl,         N-(2-trifluoromethylbenzyl)amidocarbonyl,         N-(1-phenylethyl)amidocarbonyl,         N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzyl amidosulfonyl,         N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl,         N-isopropylamidocarbonyl, N-propylamidocarbonyl,         N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl,         N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl,         N-cyclohexylamidocarbonyl, fluoro, chloro, bromo, cyano,         cyclobutoxy, cyclohexoxy, cyclohexylmethoxy,         4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl,         benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy,         4-bromobenzyloxy, 4-bromobenzylamino,         5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl,         4-chlorophenoxy, 4-chloro-3-ethylphenoxy,         4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino,         3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl,         4-chlorophenylamino, 4-chlorophenylsulfonyl,         5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy,         2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy,         3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy,         3,5-difluorophenoxy, 3,5-difluorobenzyloxy,         4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy,         2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy,         3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy,         3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy,         3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy,         4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy,         3-fluoro-5-trifluoromethylbenzyloxy,         4-fluoro-2-trifluoromethylbenzyloxy,         4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy,         4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy,         2-fluorobenzyloxy, 4-fluorophenylamino,         2-fluoro-trifluoromethylphenoxy, 4 isopropylbenzyloxy,         3-isopropylphenoxy, 4 isopropylphenoxy, 4 isopropyl-3-methyl         phenoxy, 4 isopropylbenzyloxy, 3-isopropylphenoxy, 4         isopropylphenoxy, 4 isopropyl-3-methylphenoxy, phenylamino,         1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl,         2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy,         4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy,         4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy,         4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy,         3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy,         4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy,         3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy,         2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy,         3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy,         and 3-trifluoromethylthiophenoxy;     -   A is selected from the group consisting of a bond, O, S, NH,         N(CH₃), N(OH), C(O), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O),         C(O)NH, C(O)N(CH₃), CF₃CC(O), C(O)CCH₃, C(O)CCF₃, CH₂C(O),         (O)CCH₂, CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, CF₃CHCH₂, CH₃CC(O)CH₂,         CF₃CC(O)CH₂, CH₂C(O)CCH₃, CH₂C(O)CCF₃, CH₂CH₂C(O), and         CH₂(O)CCH₂;     -   A is optionally selected from the group consisting of CH₂N(CH₃),         CH₂N(CH₂CH₃), CH₂CH₂N(CH₃), and CH₂CH₂N(CH₂CH₃) with the proviso         that B is hydrido;     -   X^(O) is selected from the group consisting of hydrido, hydroxy,         amino, thiol, amidino, hydroxyamino, aminomethyl, 1-aminoethyl,         2-aminoethyl, 3-aminopropyl, 2-aminopropyl, methylamino,         dimethylamino, cyano, methyl, ethyl, isopropyl, propyl, butyl,         trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl,         3,3,3-trifluoropropyl, 2,2,3,3,3-pentafluoropropyl, methoxy,         ethoxy, propoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl,         3-hydroxypropyl, 2,3-dihydroxypropyl, methoxyamino, ethoxyamino,         methylthio, ethylthio, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo;     -   R² is Z⁰-Q;     -   Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂,         0, S, NH, N(CH₃), CH(OH), OCH₂, SCH₂, N(H)CH₂, CH₂O, CH₂S,         CH₂N(H), CH(NH₂), CH₂CH(OH), CH₂CHNH₂, CH(OH)CH₂, and         CH(NH₂)CH₂;     -   Q is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         1,2,4-triazol-3-yl, 1,2,4-triazol-5-yl, 1,2,4-oxadiazol-3-yl,         1,2,4 oxadiazol-5-yl, 1,3,4-oxadiazol-3-yl,         1,3,4-oxadiazol-5-yl, 3-isothiazolyl, % isothiazolyl,         2-oxazolyl, 2-thiazolyl, 3-isoxazolyl, 5 isoxazolyl, 2-pyridyl,         3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl,         5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, 1,3,5-triazin-2-yl,         1,2,4-triazin-3-yl, 1,2,4-triazin-5-yl, 1,2,4-triazin-6-yl,         1,2,3-triazin-4-yl, and 1,2,3-triazin-5-yl, wherein a carbon         adjacent to the carbon at the point of attachment is optionally         substituted by R⁹ the other carbon adjacent to the carbon at the         point of attachment is optionally substituted by R¹³, a carbon         adjacent to R⁹ and two atoms from the carbon at the point of         attachment is optionally substituted by R¹⁰, a carbon adjacent         to R¹³ and two atoms from the carbon at the point of attachment         is optionally substituted by R¹², and any carbon adjacent to         both R¹⁰ and R¹² is optionally substituted by R¹¹;     -   K is CR^(4a)R^(4b) wherein R^(4a) and R^(4b) are independently         selected from the group consisting of methyl, ethyl, propyl,         isopropyl, fluoro, chloro, hydroxy, hydroxymethyl,         1-hydroxyethyl, methoxymethyl, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoromethyl, methylthiomethyl, and         hydrido;     -   E⁰ is a bond, C(O)N(H), (H)NC(O), and S(O)₂N(H);     -   Y⁰ is selected from the group of formulas consisting of:     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, methyl, ethyl, isopropyl, propyl,         amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy,         propoxy, hydroxy, amino, methoxyamino, ethoxyamino, aminomethyl,         1-aminoethyl, 2-aminoethyl, N—N-methylamino, dimethylamino,         N-ethylamino, methylthio, ethylthio, isopropylthio,         trifluoromethylthio, methylsulfinyl, ethylsulfinyl,         methylsulfonyl, ethylsulfonyl, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl,         N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, acetyl,         propanoyl, trifluoroacetyl, pentafluoropropanoyl, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, and cyano;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         C(NR²⁵)NR²³R²⁴ and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴) with the proviso         that no more than one of R²⁰ and R²¹ is hydroxy, N-methylamino,         and N,N-dimethylamino at the same time and that no more than one         of R²³ and R²⁴ is hydroxy, N-methylamino, and N,N-dimethylamino         at the same time;     -   R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from         the group consisting of hydrido, methyl, ethyl, propyl, butyl,         isopropyl, hydroxy, 2-aminoethyl, 2-(N-methylamino)ethyl, and         2-(N,N-dimethylamino)ethyl;     -   Q^(s) is selected from the group consisting of a bond, CH₂,         CH₂CH₂, CH₃CH, CF₃CH, CH₃CHCH₂, CF₃CHCH₂, CH₂(CH₃)CH, CH═CH,         CF═CH, C(CH₃)═CH, CH═CHCH₂, CF═CHCH₂, C(CH₃)═CHCH₂, CH₂CH═CH,         CH₂CF═CH, CH₂C(CH₃)═CH, CH₂CH═CHCH₂, CH₂CF═CHCH₂,         CH₂C(CH₃)═CHCH₂, CH₂CH═CHCH₂CH₂, CH₂CF═CHCH₂CH₂, and         CH₂C(CH₃)═CHCH₂CH₂.

In a more preferred specific embodiment of Formula I, compounds have the formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl,         4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl,         5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and         1,3,5-triazin-2-yl, wherein a carbon adjacent to the carbon at         the point of attachment of said phenyl or heteroaryl ring to A         is optionally substituted by R³², the other carbon adjacent to         the carbon at the point of attachment is optionally substituted         by R³⁶, a carbon adjacent to R³² and two atoms from the carbon         at the point of attachment is optionally substituted by R³³, a         carbon adjacent to R³⁶ and two atoms from the carbon at the         point of attachment is optionally substituted by R³⁵, and any         carbon adjacent to both R³³ and R³⁵ is optionally substituted by         R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, amidino, guanidino, carboxy,         methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino,         methoxyamino, ethoxyamino, acetamido, trifluoroacetamido,         N-methylamino, dimethylamino, N-ethylamino, methylthio,         ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl,         2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl,         trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro,         bromo, amidosulfonyl, N-methylamidosulfonyl,         N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl,         2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl,         ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl,         N,N-dimethylamidocarbonyl, cyano, and Q^(b);     -   A is selected from the group consisting of a bond, NH, N(CH₃),         N(OH), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O), C(O)NH,         C(O)N(CH₃), CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, and CF₃CHCH₂;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, methyl, ethyl, isopropyl, propyl,         carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy,         propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl,         2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino,         methylthio, ethylthio, isopropylthio, trifluoromethylthio,         methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl,         trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, and cyano;     -   R¹⁶ or R¹⁹ is optionally C(NR²⁵)NR²³R²⁴ with the proviso that         R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is C(NR²⁵)NR²³R²⁴ or hydrido, with the proviso that no         more than one of R²³ and R²⁴ is hydroxy at the same time;     -   R²³, R²⁴, and R²⁵ are independently selected from the group         consisting of hydrido, methyl, ethyl, and hydroxy.

In another more preferred specific embodiment of Formula I, compounds have the formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of hydrido, ethyl,         2-propynyl, 2-propenyl, propyl, isopropyl, butyl, 2-butenyl,         3-butenyl, 2-butynyl, sec-butyl, tert-butyl, isobutyl,         2-methylpropenyl, 1-pentyl, 2-pentenyl, 3-pentenyl, 4-pentenyl,         2-pentynyl, 3-pentynyl, 2-pentyl, 1-methyl-2-butenyl,         1-methyl-3-butenyl, 1-methyl-2-butynyl, 3-pentyl,         1-ethyl-2-propenyl, 2-methylbutyl, 2-methyl-2-butenyl,         2-methyl-3-butenyl, 2-methyl-3-butynyl, 3-methylbutyl,         3-methyl-2-butenyl, 3-methyl-3-butenyl, 1-hexyl, 2-hexenyl,         3-hexenyl, 4-hexenyl, 5-hexenyl, 2-hexynyl, 3-hexynyl,         4-hexynyl, 2-hexyl, 1-methyl-2-pentenyl, 1-methyl-3-pentenyl,         1-methyl-4-pentenyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl,         3-hexyl, 1-ethyl-2-butenyl, 1-ethyl-3-butenyl,         1-propyl-2-propenyl, 1-ethyl-2-butynyl, 1-heptyl, 2-heptenyl,         3-heptenyl, 4-heptenyl, 5-heptenyl, 6-heptenyl, 2-heptynyl,         3-heptynyl, 4-heptynyl, 5-heptynyl, 2-heptyl,         1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methylhexenyl,         1-methyl-5-hexenyl, 1-methyl-2-hexynyl, 1-methyl-3-hexynyl,         1-methyl-hexynyl, 3-heptyl, 1-ethyl-2-pentenyl,         1-ethyl-3-pentenyl, 1-ethyl-4-pentenyl, 1-butyl-2-propenyl,         1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 2,2,2-trifluoroethyl,         2,2-difluoropropyl, 4-trifluoromethyl-5,5-trifluoropentyl,         4-trifluoromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and         3,3,3-trifluoropropyl, wherein each member of group B is         optionally substituted at any carbon up to and including 5 atoms         from the point of attachment of B to A with one or more of the         group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, amidino, guanidino, carboxy,         methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino,         methoxyamino, ethoxyamino, acetamido, trifluoroacetamido,         N-methylamino, dimethylamino, N-ethylamino, methylthio,         ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl,         2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl,         trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro,         bromo, armidosulfonyl, N-methylamidosulfonyl,         N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl,         2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl,         ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl,         N,N-dimethylamidocarbonyl, cyano, and Q^(b);     -   A is selected from the group consisting of bond, NH, N(CH₃),         N(OH), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O), C(O)NH,         C(O)N(CH₃), CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, and CF₃CHCH₂;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, methyl, ethyl, isopropyl, propyl,         carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy,         propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl,         2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino,         methylthio, ethylthio, isopropylthio, trifluoromethylthio,         methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl,         trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, and cyano;     -   R¹⁶ or R¹⁹ is optionally selected from the group consisting of         NR²⁰R²¹, C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the         proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido,         C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴) with the proviso         that no more than one of R²⁰ and R²¹ is hydroxy at the same time         and with the further proviso that no more than one of R²³ and         R²⁴ is hydroxy at the same time;     -   R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from         the group consisting of hydrido, methyl, ethyl, propyl, butyl,         isopropyl, and hydroxy.

In still another more preferred specific embodiment of Formula I, compounds have the formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of cyclopropyl,         cyclobutyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl,         azetidin-3-yl, thiaetan-3-yl, cyclopentyl, cyclohexyl,         norbornyl, 7-oxabicyclo[2.2.1]heptan-2-yl,         bicyclo[3.1.0]hexan-6-yl, cycloheptyl, 2-morpholinyl,         3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl,         1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl,         1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl,         4H-2-pyranyl, 4H-3-pyranyl, 4H-pyranyl, 4H-pyran-one-2-yl,         4H-pyran-4-one-3-yl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl,         2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl,         2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein each ring         carbon is optionally substituted with R³³, ring carbons and a         nitrogen adjacent to the carbon atom at the point of attachment         are optionally substituted with R⁹ or R¹³, a ring carbon or         nitrogen adjacent to the R⁹ position and two atoms from the         point of attachment is optionally substituted with R¹⁰, and a         ring carbon or nitrogen adjacent to the R¹³ position and two         atoms from the point of attachment is optionally substituted         with R¹²;     -   R³³ is selected from the group consisting of hydrido, amidino,         guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy,         hydroxy, amino, methoxyamino, ethoxyamino, acetamido,         trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino,         methylthio, ethylthio, isopropylthio, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl,         N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl,         methoxycarbonyl, ethoxycarbonyl, amidocarbonyl,         N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and         Q^(b);

-   A is selected from the group consisting of a bond, NH, N(CH₃),     N(OH), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O), C(O)NH, C(O)N(CH₃),     CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, and CF₃CHCH₂;     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, methyl, ethyl, isopropyl, propyl,         carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy,         propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl,         2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino,         methylthio, ethylthio, isopropylthio, trifluoromethylthio,         methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl,         trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl,         1-hydroxyethyl, 2-hydroxyethyl, and cyano;     -   R¹⁶ or R¹⁹ is optionally C(NR²⁵)NR²³R²⁴ with the proviso that         R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido;     -   Q^(b) is C(NR²⁵)NR²³R²⁴ or hydrido, with the proviso that no         more than one of R²³ and R²⁴ is hydroxy at the same time;     -   R²³, R²⁴, and R²⁵ are independently selected from the group         consisting of hydrido, methyl, ethyl, and hydroxy.

The more preferred specific embodiment compounds of Formula I having the formula:

or a pharmaceutically acceptable salt thereof, have common structural units, wherein;

-   -   X^(O) is selected from the group consisting of hydrido, hydroxy,         amino, aminomethyl, 1-aminoethyl, methyl, ethyl,         trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl,         methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl,         methylthio, ethylthio, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo;     -   R² is Z⁰-Q;     -   Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂,         O, S, NH, N(CH₃), OCH₂, SCH₂, N(H)CH₂, and N(CH₃)CH₂;     -   Q is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl,         4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl,         5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,%         triazin-2-yl, wherein a carbon adjacent to the carbon at the         point of attachment of said phenyl or heteroaryl ring to Z⁰ is         optionally substituted by R⁹, the other carbon adjacent to the         carbon at the point of attachment is optionally substituted by         R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at         the point of attachment is optionally substituted by R¹⁰, a         carbon adjacent to R¹³ and two atoms from the carbon at the         point of attachment is optionally substituted by R¹², and any         carbon adjacent to both R¹⁰ and R¹² is optionally substituted by         R¹¹;     -   R⁹, R¹¹, and R¹³ are independently selected from the group         consisting of hydrido, amidino, guanidino, carboxy, methyl,         ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy,         hydroxy, amino, N-methylamino, N,N-dimethyl amino, N-ethylamino,         methylthio, ethylthio, isopropylthio, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl,         2,2,3,3,3-pentafluoropropyl, trifluoromethoxy,         1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo,         methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl,         N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl,         2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl,         N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano;     -   R¹⁰ and R¹² are independently selected from the group consisting         of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl,         ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy,         hydroxy, amino, methoxyamino, ethoxyamino, acetamido,         trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl,         N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido,         amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl,         hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl,         2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl,         amidocarbonyl, N-methyl amidocarbonyl,         N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl,         N-(2-chlorobenzyl)amidocarbonyl,         N-(3-fluorobenzyl)amidocarbonyl,         N-(2-trifluoromethylbenzyl)amidocarbonyl,         N—(1-phenylethyl)amidocarbonyl,         N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzyl amidosulfonyl,         N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl,         N-isopropylamidocarbonyl, N-propylamidocarbonyl,         N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutyl         amidocarbonyl, N-cyclopentylamidocarbonyl,         N-cyclohexylamidocarbonyl, fluoro, chloro, bromo, cyano,         cyclobutoxy, cyclohexoxy, cyclohexylmethoxy,         4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl,         benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy,         4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethyl         amino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy,         4-chloro-3-ethylphenoxy, 4-chloro-3-ethyl benzyl amino,         4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy,         4-chlorobenzyloxy, 4-chlorobenzyl sulfonyl, 4-chlorophenyl         amino, 4-chlorophenylsulfonyl, 4-chloropyrid-3-yloxy,         2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy,         2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy,         2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyl         oxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy,         2,4-difluorophenoxy, 2,5-difluorophenoxy, ,5-dimethylphenoxy,         3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy,         3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy,         3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy,         4-fluorobenzyloxy, 2-fluoro-3-tri fluoromethylbenzyloxy,         3-fluoro-5-trifluoromethylbenzyloxy,         4-fluoro-2-trifluoromethylbenzyloxy,         4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy,         4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy,         2-fluorobenzyloxy, 4-fluorophenylamino,         2-trifluoromethylphenoxy, 4-isopropylbenzyloxy,         3-isopropylphenoxy, 4 isopropylphenoxy,         4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy,         3-isopropylphenoxy, 4 isopropylphenoxy,         4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy,         2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino,         phenylsulfonyl, 3-trifluoromethoxybenzyloxy,         4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy,         4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyl oxy,         4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy,         3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy,         4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy,         3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy,         2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy,         3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy,         and 3-trifluoromethylthiophenoxy;     -   Y⁰ is selected from the croup of formulas consisting of:

-   Q^(S) is selected from the group consisting of a bond, CH₂ and     CH₂CH₂.

In a most preferred specific embodiment of Formula I, compounds have the formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of phenyl, 2-thienyl,         3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl,         2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl,         2-thiazolyl, 3-isoxazolyl, and 5-isoxazolyl, wherein a carbon         adjacent to the carbon at the point of attachment of said phenyl         or heteroaryl ring to A is optionally substituted by R³², the         other carbon adjacent to the carbon at the point of attachment         is optionally substituted by R³⁶, a carbon adjacent to R³² and         two atoms from the carbon at the point of attachment is         optionally substituted by R³³, a carbon adjacent to R³⁶ and two         atoms from the carbon at the point of attachment is optionally         substituted by R³⁵, and any carbon adjacent to both R³³ and R³⁵         is optionally substituted by R³⁴;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, amidino, guanidino, methyl, ethyl,         methoxy, ethoxy, hydroxy, amino, N-methylamino, dimethylamino,         methoxyamino, methylthio, ethylthio, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo,         amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl,         amidocarbonyl, carboxy, cyano, and Q^(b);     -   A is selected from the group consisting of a bond, NH, N(CH₃),         CH₂, CH₃CH, and CH₂CH₂;     -   Q^(b) is NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴;     -   R²⁰, R²¹, R²³, R²⁴, and R⁵ are independently selected from the         group consisting of hydrido, methyl, and ethyl.

In another most preferred specific embodiment of Formula 1, compounds have the formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of hydrido, ethyl,         2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butenyl,         2-butynyl, sec-butyl, tert-butyl, isobutyl, 2-methylpropenyl,         1-pentyl, 2-pentenyl, 3-pentenyl, 2-pentynyl, 3-pentynyl,         2-pentyl, 3-pentyl, 2-methylbutyl, 2-methyl-2-butenyl,         3-methylbutyl, 3-methyl-2-butenyl, 1-hexyl, 2-hexenyl,         3-hexenyl, 4-hexenyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 2-hexyl,         1-methyl-2-pentenyl, 1-methyl-3-pentenyl, 1-methyl-2-pentynyl,         1-methyl-3-pentynyl, 3-hexyl, 1-ethyl-2-butenyl, 1-heptyl,         2-heptenyl, 3-heptenyl, 4-heptenyl, 5-heptenyl, 2-heptynyl,         3-heptynyl, 4-heptynyl, 5-heptynyl, 2-heptyl,         1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methyl-4-hexenyl,         1-methyl-2-hexynyl, 1-methyl-3-hexynyl, 1-methyl-hexynyl,         3-heptyl, 1-ethyl-2-pentenyl, 1-ethyl-3-pentenyl,         1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 2,2,2-trifluoroethyl,         2,2-difluoropropyl, 4-trifluoromethyl-5,5,5-trifluoropentyl,         4-trifluoromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and         3,3,3-trifluoropropyl, wherein each member of group B is         optionally substituted at any carbon up to and including 5 atoms         from the point of attachment of B to A with one or more of the         group consisting of R³², R³³, R³⁴, R³⁵ and R³⁶;     -   R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the         group consisting of hydrido, amidino, guanidino, methyl, ethyl,         methoxy, ethoxy, hydroxy, amino, N-methylamino, dimethylamino,         methoxyamino, methylthio, ethylthio, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo,         amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl,         amidocarbonyl, carboxy, cyano, and Q     -   A is selected from the group consisting of a bond, NH, N(CH₃),         CH₂, CH₃CH, and CH₂CH₂;     -   A is optionally selected from the group consisting of CH₂N(CH₃),         CH₂N(CH₂CH₃), CH₂CH₂N(CH₃), and CH₂CH₂N(CH₂CH₃) with the proviso         that B is hydrido;     -   Q^(b) is selected from the group consisting of NR²⁰R²¹,         C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴);     -   R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from         the group consisting of hydrido, methyl, and ethyl.

In still another most preferred specific embodiment of Formula 1, compounds have the formula:

or a pharmaceutically acceptable salt thereof, wherein;

-   -   B is selected from the group consisting of cyclopropyl,         cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, oxalan-2-yl,         2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl,         azetidin-2-yl, azetidin-3-yl, bicyclo[3.1.0]hexan-6-yl,         2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl,         2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl,         4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl,         2-dioxanyl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl,         2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl,         2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein each ring         carbon is optionally substituted with R³³, ring carbons and a         nitrogen adjacent to the carbon atom at the point of attachment         are optionally substituted with R⁹ or R¹³, a ring carbon or         nitrogen adjacent to the R⁹ position and two atoms from the         point of attachment are optionally substituted with R¹⁰, and a         ring carbon or nitrogen atom adjacent to the R¹³ position and         two atoms from the point of attachment is optionally substituted         with R¹²;     -   R³³ is selected from the group consisting of hydrido, amidino,         guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, carboxy,         amino, N-methylamino, dimethylamino, methoxyamino, methylthio,         ethylthio, trifluoromethyl, pentafluoroethyl,         2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl,         N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, cyano, and         Q^(b);     -   A is selected from the group consisting of a bond, NH, N(CH₃),         CH₂, CH₃CH, CH₂CH₂, and CH₂CH₂CH₂;     -   Q^(b) is NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴;     -   R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the         group consisting of hydrido, methyl, and ethyl.

The most preferred specific embodiment compounds of Formula 1, said compounds having the formula:

or a pharmaceutically acceptable salt thereof, have common structural units, wherein;

-   -   X^(O) is selected from the group consisting of hydrido,         aminomethyl, methyl, ethyl, trifluoromethyl,         2,2,2-trifluoroethyl, hydroxymethyl, 2-hydroxyethyl, chloro, and         fluoro;     -   R² is selected from the group consisting of phenyl, 2-thienyl,         2-furyl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl,         2-pyridyl, and 3-pyridyl, wherein a carbon adjacent to the         carbon at the point of attachment of said phenyl or heteroaryl         ring to the 4-pyrone ring is optionally substituted by R⁹ the         other carbon adjacent to the carbon at the point of attachment         is optionally substituted by R¹³, a carbon adjacent to R⁹ and         two atoms from the carbon at the point of attachment is         optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two         atoms from the carbon at the point of attachment is optionally         substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹²         is optionally substituted by R¹¹;     -   R⁹, R¹¹, and R¹³ are independently selected from the group         consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy,         amino, N-methylamino, N,N-dimethylamino, methylthio,         trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro,         chloro, bromo, amidosulfonyl, N-methylamidosulfonyl,         N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl,         amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano;     -   R¹⁰ and R¹² are independently selected from the group consisting         of hydrido, amidino, amidocarbonyl, N-methylamidocarbonyl,         N-benzyl amidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl,         N-(3-fluorobenzyl)amidocarbonyl,         N-(2-trifluoromethylbenzyl)amidocarbonyl,         N-(1-phenylethyl)amidocarbonyl,         N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl,         N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl,         N-isopropyl amidocarbonyl, N-propylamidocarbonyl,         N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl,         N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl,         N-cyclohexylamidocarbonyl, guanidino, methyl, ethyl, methoxy,         ethoxy, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl,         carboxy, carboxymethyl, amino, acetamido, trifluoromethyl,         pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoroacetamido,         aminomethyl, N-methylamino, dimethylamino, methoxyamino,         amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl,         methanesulfonamido, methoxycarbonyl, fluoro, chloro, bromo, and         cyano;     -   Y⁰ is selected from the croup of formulas consisting of:     -   R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group         consisting of hydrido, methyl, ethyl, amidino, guanidino,         methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl,         2-aminoethyl, N-methylamino, dimethylamino, methylthio,         ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl,         trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl,         trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and         cyano;     -   Q^(s) is CH₂.

The compounds of this invention can be used in anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular disease. The compounds of this invention can be used to inhibit serine protease associated with the coagulation cascade and factors II, VII, VIII, IX, X, XI, or XII. The compounds of the invention can inhibit the formation of blood platelet aggregates, inhibit the formation of fibrin, inhibit thrombus formation, and inhibiting embolus formation in a mammal, in blood, in blood products, and in mammalian organs. The compounds also can be used for treating or preventing unstable angina, refractory angina, myocardial infarction, transient ischemic attacks, atrial fibrillation, thrombotic stroke, embolic stroke, deep vein thrombosis, disseminated intravascular coagulation, ocular build up of fibrin, and reocclusion or restenosis of recanalized vessels in a mammal. The compounds can also be used in prophylactic treatment of subjects who are at risk of developing such disorders. The compounds can be used to lower the risk of atherosclerosis. The compounds of Formula (I) would also be useful in prevention of cerebral vascular accident (CVA) or stroke.

Besides being useful for human treatment, these compounds are also useful for veterinary treatment of companion animals, exotic animals and farm animals, including mammals, rodents, and the like. More preferred animals include horses, dogs, and cats.

The use of generic terms in the description of the compounds are herein defined for clarity.

Standard single letter elemental symbols are used to represent specific types of atoms unless otherwise defined. The symbol “C” represents a carbon atom. The symbol “0” represents an oxygen atom. The symbol “N” represents a nitrogen atom. The symbol “P” represents a phosphorus atom. The symbol “S” represents a sulfur atom. The symbol “H” represents a hydrogen atom. Double letter elemental symbols are used as defined for the elements of the periodical table (i.e., Cl represents chlorine, Se represents selenium, etc.).

As utilized herein, the term “alkyl”, either alone or within other terms such as “haloalkyl” and “alkylthio”, means an acyclic alkyl radical containing from 1 to about 10, preferably from 3 to about 8 carbon atoms and more preferably 3 to about 6 carbon atoms. Said alkyl radicals may be optionally substituted with groups as defined below. Examples of such radicals include methyl, ethyl, chloroethyl, hydroxyethyl, n-propyl, oxopropyl, isopropyl, n-butyl, cyanobutyl, isobutyl, sec-butyl, tert-butyl, pentyl, aminopentyl, iso-amyl, hexyl, octyl and the like.

The term “alkenyl” refers to an unsaturated, acyclic hydrocarbon radical in so much as it contains at least one double bond. Such alkenyl radicals contain from about 2 to about 10 carbon atoms, preferably from about 3 to about 8 carbon atoms and more preferably 3 to about 6 carbon atoms. Said alkenyl radicals may be optionally substituted with groups as defined below. Examples of suitable alkenyl radicals include propenyl, 2-chloropropenyl, buten-1-yl, isobutenyl, penten-1-yl, 2-2-methylbuten-1-yl, 3-methylbuten-1-yl, hexen-1-yl, 3-hydroxyhexen-1-yl, hepten-1-yl, and octen-1-yl, and the like.

The term “alkynyl” refers to an unsaturated, acyclic hydrocarbon radical in so much as it contains one or more triple bonds, such radicals containing about 2 to about 10 carbon atoms, preferably having from about 3 to about 8 carbon atoms and more preferably having 3 to about 6 carbon atoms. Said alkynyl radicals may be optionally substituted with groups as defined below. Examples of suitable alkynyl radicals include ethynyl, propynyl, hydroxypropynyl, butyn-1-yl, butyn-2-yl, pentyn-1-yl, pentyn-2-yl, 4 methoxypentyn-2-yl, 3-methylbutyn-1-yl, hexyn-1-yl, hexyn-2-yl, hexyn-3-yl, 3,3-dimethylbutyn-1-yl radicals and the like.

The term “hydrido” denotes a single hydrogen atom (H). This hydrido radical may be attached, for example, to an oxygen atom to form a “hydroxyl” radical, one hydrido radical may be attached to a carbon atom to form a “methine” radical —CH═, or two hydrido radicals may be attached to a carbon atom to form a “methylene” (—CH₂—) radical.

The term “carbon” radical denotes a carbon atom without any covalent bonds and capable of forming four covalent bonds.

The term “cyano” radical denotes a carbon radical having three of four covalent bonds shared by a nitrogen atom.

The term “hydroxyalkyl” embraces radicals wherein any one or more of the alkyl carbon atoms is substituted with a hydroxyl as defined above. Specifically embraced are monohydroxyalkyl, dihydroxyalkyl and polyhydroxyalkyl radicals.

The term “alkanoyl” embraces radicals wherein one or more of the terminal alkyl carbon atoms are substituted with one or more carbonyl radicals as defined below. Specifically embraced are monocarbonylalkyl and dicarbonylalkyl radicals. Examples of monocarbonylalkyl radicals include formyl, acetyl, and pentanoyl. Examples of dicarbonylalkyl radicals include oxalyl, malonyl, and succinyl.

The term “alkylene” radical denotes linear or branched radicals having from 1 to about 10 carbon atoms and having attachment points for two or more covalent bonds. Examples of such radicals are methylene, ethylene, methylethylene, and isopropylidene.

The term “alkenylene” radical denotes linear or branched radicals having from 2 to about 10 carbon atoms, at least one double bond, and having attachment points for two or more covalent bonds. Examples of such radicals are 1,1-vinylidene (CH₂═C), 1,2-vinylidene (—CH═CH—), and 1,4-butadienyl (—CH═CH—CH═CH—).

The term “halo” means halogens such as fluorine, chlorine, bromine or iodine atoms.

The term “haloalkyl” embraces radicals wherein any one or more of the alkyl carbon atoms is substituted with halo as defined above. Specifically embraced are monohaloalkyl, dihaloalkyl and polyhaloalkyl radicals. A monohaloalkyl radical, for one example, may have either a bromo, chloro or a fluoro atom within the radical. Dihalo radicals may have two or more of the same halo atoms or a combination of different halo radicals and polyhaloalkyl radicals may have more than two of the same halo atoms or a combination of different halo radicals. More preferred haloalkyl radicals are “haloalkyl” radicals having one to about six carbon atoms. Examples of such haloalkyl radicals include fluoromethyl, difluoromethyl, trifluoromethyl, chloromethyl, dichloromethyl, trichloromethyl, trifiuoroethyl, pentafluoroethyl, heptafluoropropyl, difluorochloromethyl, dichlorofluoromethyl, difluoroethyl, difluoropropyl, dichloroethyl and dichloropropyl.

The term “hydroxyhaloalkyl” embraces radicals wherein any one or more of the haloalkyl carbon atoms is substituted with hydroxy as defined above. Examples of “hydroxyhaloalkyl” radicals include hexafluorohydroxypropyl.

The term “haloalkylene radical” denotes alkylene radicals wherein any one or more of the alkylene carbon atoms is substituted with halo as defined above. Dihalo alkylene radicals may have two or more of the same halo atoms or a combination of different halo radicals and polyhaloalkylene radicals may have more than two of the same halo atoms or a combination of different halo radicals. More preferred haloalkylene radicals are “haloalkylene” radicals having one to about six carbon atoms. Examples of “haloalkylene” radicals include difluoromethylene, tetrafluoroethylene, tetrachloroethylene, alkyl substituted monofluoromethylene, and aryl substituted trifluoromethylene.

The term “haloalkenyl” denotes linear or branched radicals having from 1 to about 10 carbon atoms and having one or more double bonds wherein any one or more of the alkenyl carbon atoms is substituted with halo as defined above. Dihaloalkenyl radicals may have two or more of the same halo atoms or a combination of different halo radicals and polyhaloalkenyl radicals may have more than two of the same halo atoms or a combination of different halo radicals.

The terms “alkoxy” and “alkoxyalkyl” embrace linear or branched oxy-containing radicals each having alkyl portions of one to about ten carbon atoms, such as methoxy radical. The term “alkoxyalkyl” also embraces alkyl radicals having one or more alkoxy radicals attached to the alkyl radical, that is, to form monoalkoxyalkyl and dialkoxyalkyl radicals. More preferred alkoxy radicals are “alkoxy” radicals having one to six carbon atoms. Examples of such radicals include methoxy, ethoxy, propoxy, butoxy, isopropoxy and tert-butoxy alkyls. The “alkoxy” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “haloalkoxy” and “haloalkoxyalkyl” radicals. Examples of such haloalkoxy radicals include fluoromethoxy, chloromethoxy, trifluoromethoxy, difluoromethoxy, trifluoroethoxy, fluoroethoxy, tetrafluoroethoxy, pentafluoroethoxy, and fluoropropoxy. Examples of such haloalkoxyalkyl radicals include fluoromethoxymethyl, chloromethoxyethyl, trifluoromethoxymethyl, difluoromethoxyethyl, and trifluoroethoxymethyl.

The terms “alkenyloxy” and “alkenyloxyalkyl” embrace linear or branched oxy-containing radicals each having alkenyl portions of two to about ten carbon atoms, such as ethenyloxy or propenyloxy radical. The term “alkenyloxyalkyl” also embraces alkenyl radicals having one or more alkenyloxy radicals attached to the alkyl radical, that is, to form monoalkenyloxyalkyl and dialkenyloxyalkyl radicals. More preferred alkenyloxy radicals are “alkenyloxy” radicals having two to six carbon atoms. Examples of such radicals include ethenyloxy, propenyloxy, butenyloxy, and isopropenyloxy alkyls. The “alkenyloxy” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “haloalkenyloxy” radicals. Examples of such radicals include trifluoroethenyloxy, fluoroethenyloxy, difluoroethenyhloxy, and fluoropropenyloxy.

The term “haloalkoxyalkyl” also embraces alkyl radicals having one or more haloalkoxy radicals attached to the alkyl radical, that is, to form monohaloalkoxyalkyl and dihaloalkoxyalkyl radicals. The term “haloalkenyloxy” also embraces oxygen radicals having one or more haloalkenyloxy radicals attached to the oxygen radical, that is, to form monohaloalkenyloxy and dihaloalkenyloxy radicals. The term “haloalkenyloxyalkyl” also embraces alkyl radicals having one or more haloalkenyloxy radicals attached to the alkyl radical, that is, to form monohaloalkenyloxyalkyl and dihaloalkenyloxyalkyl radicals.

The term “alkylenedioxy” radicals denotes alkylene radicals having at least two oxygens bonded to a single alkylene group. Examples of “alkylenedioxy” radicals include methylenedioxy, ethylenedioxy, alkylsubstituted methylenedioxy, and arylsubstituted methylenedioxy. The term “haloalkylenedioxy” radicals denotes haloalkylene radicals having at least two oxy groups bonded to a single haloalkyl group. Examples of “haloalkylenedioxy” radicals include difluoromethylenedioxy, tetrafluoroethylenedioxy, tetrachloroethylenedioxy, alkylsubstituted monofluoromethylenedioxy, and aryl substituted monofluoromethylenedioxy.

The term “aryl”, alone or in combination, means a carbocyclic aromatic system containing one, two or three rings wherein such rings may be attached together in a pendant manner or may be fused. The term “fused” means that a second ring is present (ie, attached or formed) by having two adjacent atoms in common (ie, shared) with the first ring. The term “fused” is equivalent to the term “condensed”. The term “aryl” embraces aromatic radicals such as phenyl, naphthyl, tetrahydronaphthyl, indane and biphenyl.

The term “perhaloaryl” embraces aromatic radicals such as phenyl, naphthyl, tetrahydronaphthyl, indane and biphenyl wherein the aryl radical is substituted with 3 or more halo radicals as defined below.

The term “heterocyclyl” embraces saturated and partially saturated heteroatom-containing ring-shaped radicals having from 4 through 15 ring members, herein referred to as “C4-C15 heterocyclyl”, selected from carbon, nitrogen, sulfur and oxygen, wherein at least one ring atom is a heteroatom. Heterocyclyl radicals may contain one, two or three rings wherein such rings may be attached in a pendant manner or may be fused. Examples of saturated heterocyclic radicals include saturated 3 to 6-membered heteromonocylic group containing 1 to 4 nitrogen atoms[e.g. pyrrolidinyl, imidazolidinyl, piperidino, piperazinyl, etc.]; saturated 3 to 6-membered heteromonocyclic group containing 1 to 2 oxygen atoms and 1 to 3 nitrogen atoms [e.g. morpholinyl, etc.]; saturated 3 to 6-membered heteromonocyclic group containing 1 to 2 sulfur atoms and 1 to 3 nitrogen atoms [e.g., thiazolidinyl, etc.]. Examples of partially saturated heterocyclyl radicals include dihydrothiophene, dihydropyran, dihydrofuran and dihydrothiazole. Non-limiting examples of heterocyclic radicals include 2-pyrrolinyl, 3-pyrrolinyl, pyrrolindinyl, 1,3-dioxolanyl, 2H-pyranyl, 4H-pyranyl, piperidinyl, 1,4-dioxanyl, morpholinyl, 1,4-dithianyl, thiomorpholinyl, and the like. Said “heterocyclyl” group may be substituted as defined herein. Preferred heterocyclic radicals include five to twelve membered fused or unfused radicals.

The term “heteroaryl” embraces fully unsaturated heteroatom-containing ring-shaped aromatic radicals having from 4 through 15 ring members selected from carbon, nitrogen, sulfur and oxygen, wherein at least one ring atom is a heteroatom. Heteroaryl radicals may contain one, two or three rings wherein such rings may be attached in a pendant manner or may be fused. Examples of “heteroaryl” radicals, include the unsaturated heteromonocyclyl group of 5 to 6 contiguous members containing 1 to 4 nitrogen atoms, for example, pyrrolyl, pyrrolinyl, imidazolyl, pyrazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, pyrimidyl, pyrazinyl, pyridazinyl, triazolyl [e.g., 4H-1,2,4-triazolyl, 1H-1,2,3-triazolyl, 2H-1,2,3-triazolyl, etc.] tetrazolyl [e.g. 1H-tetrazolyl, 2H-tetrazolyl, etc.], etc.; unsaturated condensed heterocyclic group containing 1 to 5 nitrogen atoms, for example, indolyl, isoindolyl, indolizinyl, benzimidazolyl, quinolyl, isoquinolyl, indazolyl, benzotriazolyl, tetrazolopyridazinyl [e.g., tetrazolo [1,5-b]pyridazinyl, etc.], etc.; unsaturated 3 to 6-membered heteromonocyclic group containing an oxygen atom, for example, pyranyl, 2-furyl, 3-furyl, etc.; unsaturated 5 to 6-membered heteromonocyclic group containing a sulfur atom, for example, 2-thienyl, 3-thienyl, etc.; unsaturated 5- to 6-membered heteromonocyclic group containing 1 to 2 oxygen atoms and 1 to 3 nitrogen atoms, for example, oxazolyl, isoxazolyl, oxadiazolyl [e.g., 1,2,4-oxadiazolyl, 1,3,4-oxadiazolyl, 1,2,5-oxadiazolyl, etc.] etc.; unsaturated condensed heterocyclic group containing 1 to 2 oxygen atoms and 1 to 3 nitrogen atoms [e.g. benzoxazolyl, benzoxadiazolyl, etc.]; unsaturated 5 to 6-membered heteromonocyclic group containing 1 to 2 sulfur atoms and 1 to 3 nitrogen atoms, for example, thiazolyl, thiadiazolyl [e.g., 1,2,4-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,5-thiadiazolyl, etc.] etc.; unsaturated condensed heterocyclic group containing 1 to 2 sulfur atoms and 1 to 3 nitrogen atoms [e.g., benzothiazolyl, benzothiadiazolyl, etc.] and the like. The term also embraces radicals where heterocyclic radicals are fused with aryl radicals. Examples of such fused bicyclic radicals include benzofuran, benzothiophene, and the like. Said “heteroaryl” group may be substituted as defined herein. Preferred heteroaryl radicals include five and six membered unfused radicals. Non-limiting examples of heteroaryl radicals include 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4 imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 1,2,4-triazol-3-yl, 1,2,4-triazol-5-yl, 1,2,4 oxadiazol-3-yl, 1,2,4-oxadiazol-5-yl, 1,3,4-oxadiazol-3-yl, 1,3,4-oxadiazol-5-yl, 3-isothiazolyl, 5-isothiazolyl, 2-oxazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, 1,3,5-triazin-2-yl, 1,2,4-triazin-3-yl, 1,2,4-triazin-5-yl, 1,2,4-triazin-6-yl, 1,2,3-triazinyl, and 1,2,3-triazin-5-yl, and the like.

The term “sulfonyl”, whether used alone or linked to other terms such as alkylsulfonyl, denotes respectively divalent radicals —SO₂—. “Alkylsulfonyl”, embraces alkyl radicals attached to a sulfonyl radical, where alkyl is defined as above. “Alkylsulfonylalkyl”, embraces alkylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above. “Haloalkylsulfonyl”, embraces haloalkyl radicals attached to a sulfonyl radical, where haloalkyl is defined as above. “Haloalkylsulfonylalkyl”, embraces haloalkylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “amidosulfonyl” embraces amino, monoalkylamino, dialkylamino, monocycloalkylamino, alkyl cycloalkylamino, dicycloalkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, nitrogen containing heterocyclyl, heterocyclylamino, N-alkyl-N-heterocyclylamino, heteroarylamino, and heteroaralkylamino radicals, attached to one of two unshared bonds in a sulfonyl radical.

The term “sulfinyl”, whether used alone or linked to other terms such as alkylsulfinyl, denotes respectively divalent radicals —S(O)—. “Alkylsulfinyl”, embraces alkyl radicals attached to a sulfinyl radical, where alkyl is defined as above. “Alkylsulfinylalkyl”, embraces alkylsulfinyl radicals attached to an alkyl radical, where alkyl is defined as above. “Haloalkylsulfinyl”, embraces haloalkyl radicals attached to a sulfinyl radical, where haloalkyl is defined as above. “Haloalkylsulfinylalkyl”, embraces haloalkylsulfinyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “aralkyl” embraces aryl-substituted alkyl radicals. Preferable aralkyl radicals are “aralkyl” radicals having aryl radicals attached to alkyl radicals having one to six carbon atoms. Examples of such radicals include benzyl, diphenylmethyl, triphenylmethyl, phenylethyl and diphenylethyl. The terms benzyl and phenylmethyl are interchangeable.

The term “heteroaralkyl” embraces heteroaryl-substituted alkyl radicals wherein the heteroaralkyl radical may be additionally substituted with three or more substituents as defined above for aralkyl radicals. The term “perhaloaralkyl” embraces aryl-substituted alkyl radicals wherein the aralkyl radical is substituted with three or more halo radicals as defined above.

The term “aralkylsulfinyl”, embraces aralkyl radicals attached to a sulfinyl radical, where aralkyl is defined as above. “Aralkylsulfinylalkyl”, embraces aralkylsulfinyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “aralkylsulfonyl”, embraces aralkyl radicals attached to a sulfonyl radical, where aralkyl is defined as above. “Aralkylsulfonylalkyl”, embraces aralkylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “cycloalkyl” embraces radicals having three to 15 carbon atoms. More preferred cycloalkyl radicals are “cycloalkyl” radicals having three to seven carbon atoms. Examples include radicals such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl. The term cycloalkyl embraces radicals having seven to 15 carbon atoms and having two to four rings. Examples include radicals such as norbornyl (i.e., bicyclo[2.2.1]heptyl) and adamantyl. The term “cycloalkylalkyl” embraces cycloalkyl-substituted alkyl radicals. Preferable cycloalkylalkyl radicals are “cycloalkylalkyl” radicals having cycloalkyl radicals attached to alkyl radicals having one to six carbon atoms. Examples of such radicals include cyclohexylhexyl. The term “cycloalkenyl” embraces radicals having three to ten carbon atoms and one or more carbon-carbon double bonds. Preferred cycloalkenyl radicals are “cycloalkenyl” radicals having three to seven carbon atoms. Examples include radicals such as cyclobutenyl, cyclopentenyl, cyclohexenyl and cycloheptenyl. The term “halocycloalkyl” embraces radicals wherein any one or more of the cycloalkyl carbon atoms is substituted with halo as defined above. Specifically embraced are monohalocycloalkyl, dihalocycloalkyl and polyhalocycloalkyl radicals. A monohalocycloalkyl radical, for one example, may have either a bromo, chloro or a fluoro atom within the radical. Dihalo radicals may have two or more of the same halo atoms or a combination of different halo radicals and polybalocycloalkyl radicals may have more than two of the same halo atoms or a combination of different halo radicals. More preferred halocycloalkyl radicals are “halocycloalkyl” radicals having three to about eight carbon atoms. Examples of such halocycloalkyl radicals include fluorocyclopropyl, difluorocyclobutyl, trifluorocyclopentyl, tetrafluorocyclohexyl, and dichlorocyclopropyl. The term “halocycloalkenyl” embraces radicals wherein any one or more of the cycloalkenyl carbon atoms is substituted with halo as defined above. Specifically embraced are monohalocycloalkenyl, dihalocycloalkenyl and polyhalocycloalkenyl radicals.

The term “cycloalkoxy” embraces cycloalkyl radicals attached to an oxy radical. Examples of such radicals includes cyclohexoxy and cyclopentoxy. The term “cycloalkoxyalkyl” also embraces alkyl radicals having one or more cycloalkoxy radicals attached to the alkyl radical, that is, to form monocycloalkoxyalkyl and dicycloalkoxyalkyl radicals. Examples of such radicals include cyclohexoxyethyl. The “cycloalkoxy” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “halocycloalkoxy” and “halocycloalkoxyalkyl” radicals.

The term “cycloalkylalkoxy” embraces cycloalkyl radicals attached to an alkoxy radical. Examples of such radicals includes cyclohexylmethoxy and cyclopentylmethoxy.

The term “cycloalkenyloxy” embraces cycloalkenyl radicals attached to an oxy radical. Examples of such radicals includes cyclohexenyloxy and cyclopentenyloxy. The term “cycloalkenyloxyalkyl” also embraces alkyl radicals having one or more cycloalkenyloxy radicals attached to the alkyl radical, that is, to form monocycloalkenyloxyalkyl and dicycloalkenyloxyalkyl radicals. Examples of such radicals include cyclohexenyloxyethyl. The “cycloalkenyloxy” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “halocycloalkenyloxy” and “halocycloalkenyloxyalkyl” radicals.

The term “cycloalkylenedioxy” radicals denotes cycloalkylene radicals having at least two oxygens bonded to a single cycloalkylene group. Examples of “alkylenedioxy” radicals include 1,2-dioxycyclohexylene.

The term “cycloalkylsulfinyl”, embraces cycloalkyl radicals attached to a sulfinyl radical, where cycloalkyl is defined as above. “Cycloalkylsulfinylalkyl”, embraces cycloalkylsulfinyl radicals attached to an alkyl radical, where alkyl is defined as above. The term “Cycloalkylsulfonyl”, embraces cycloalkyl radicals attached to a sulfonyl radical, where cycloalkyl is defined as above. “Cycloalkylsulfonylalkyl”, embraces cycloalkylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “cycloalkylalkanoyl” embraces radicals wherein one or more of the cycloalkyl carbon atoms are substituted with one or more carbonyl radicals as defined below. Specifically embraced are monocarbonylcycloalkyl and dicarbonylcycloalkyl radicals. Examples of monocarbonylcycloalkyl radicals include cyclohexylcarbonyl, cyclohexylacetyl, and cyclopentylcarbonyl. Examples of dicarbonylcycloalkyl radicals include 1,2-dicarbonylcyclohexane.

The term “alkylthio” embraces radicals containing a linear or branched alkyl radical, of one to ten carbon atoms, attached to a divalent sulfur atom. More preferred alkylthio radicals are “alkylthio” radicals having one to six carbon atoms. An example of “alkylthio” is methylthio (CH₃—S—). The “alkylthio” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “haloalkylthio” radicals. Examples of such radicals include fluoromethylthio, chloromethylthio, trifluoromethylthio, difluoromethylthio, trifluoroethylthio, fluoroethylthio, tetrafluoroethylthio, pentafluoroethylthio, and fluoropropylthio.

The term “alkyl aryl amino” embraces radicals containing a linear or branched alkyl radical, of one to ten carbon atoms, and one aryl radical both attached to an amino radical. Examples include N-methyl-4-methoxyaniline, N-ethyl-4-methoxyaniline, and N-methyl-4-trifluoromethoxyaniline.

The term alkylamino denotes “monoalkylamino” and “dialkylamino” containing one or two alkyl radicals, respectively, attached to an amino radical. One or two alkyl radicals of the alkylamino may be optionally substituted with hydrogen bonding substitutents selected from the group consisting of hydroxy, amino, monoalkylamino, dialkylamino, amidino, guanidino, thiol, and alkoxy provided the alkyl radicals comprises two or more carbons.

The terms arylamino denotes “monoarylamino” and “diarylamino” containing one or two aryl radicals, respectively, attached to an amino radical. Examples of such radicals include N-phenyl amino and N-naphthylamino.

The term “aralkylamino”, embraces aralkyl radicals attached to an amino radical, where aralkyl is defined as above. The term aralkylamino denotes “monoaralkylamino” and “diaralkylamino” containing one or two aralkyl radicals, respectively, attached to an amino radical. The term aralkylamino further denotes “monoaralkyl monoalkylamino” containing one aralkyl radical and one alkyl radical attached to an amino radical.

The term “arylsulfinyl” embraces radicals containing an aryl radical, as defined above, attached to a divalent S(O) atom. The term “arylsulfinylalkyl” denotes arylsulfinyl radicals attached to a linear or branched alkyl radical, of one to ten carbon atoms.

The term “arylsulfonyl”, embraces aryl radicals attached to a sulfonyl radical, where aryl is defined as above. “arylsulfonylalkyl”, embraces arylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above. The term “heteroarylsulfinyl” embraces radicals containing an heteroaryl radical, as defined above, attached to a divalent S(O) atom. The term “heteroarylsulfinylalkyl” denotes heteroarylsulfinyl radicals attached to a linear or branched alkyl radical, of one to ten carbon atoms. The term “Heteroarylsulfonyl”, embraces heteroaryl radicals attached to a sulfonyl radical, where heteroaryl is defined as above. “Heteroarylsulfonylalkyl”, embraces heteroarylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “aryloxy” embraces aryl radicals, as defined above, attached to an oxygen atom. Examples of such radicals include phenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-methylphenoxy, 3-chloro-4-ethylphenoxy, 3,4-dichlorophenoxy, 4-methylphenoxy, 3-trifluoromethoxyphenoxy, 3-trifluoromethylphenoxy, 4-fluorophenoxy, 3,4-dimethylphenoxy, 5-bromo-2-fluorophenoxy, 4-bromo-3-fluorophenoxy, 4-fluoro-3-methylphenoxy, 5,6,7,8 tetrahydronaphthyloxy, 3-isopropylphenoxy, 3-cyclopropylphenoxy, 3-ethylphenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)-phenoxy, and 4-tert-butylphenoxy.

The term “aroyl” embraces aryl radicals, as defined above, attached to an carbonyl radical as defined above. Examples of such radicals include benzoyl and toluoyl.

The term “aralkanoyl” embraces aralkyl radicals, as defined herein, attached to an carbonyl radical as defined above. Examples of such radicals include, for example, phenylacetyl.

The term “aralkoxy” embraces oxy-containing aralkyl radicals attached through an oxygen atom to other radicals. More preferred aralkoxy radicals are “aralkoxy” radicals having phenyl radicals attached to alkoxy radical as described above. Examples of such radicals include benzyloxy, 1-phenylethoxy, 3-trifluoromethoxybenzyloxy, 3-trifluoromethylbenzyloxy, 3,5 difluorobenyloxy, 3-bromobenzyloxy, 4-propylbenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, and 2-phenylethoxy.

The term “aryloxyalkyl” embraces aryloxy radicals, as defined above, attached to an alkyl group. Examples of such radicals include phenoxymethyl.

The term “haloaryloxyalkyl” embraces aryloxyalkyl radicals, as defined above, wherein one to five halo radicals are attached to an aryloxy group.

The term “heteroaroyl” embraces heteroaryl radicals, as defined above, attached to an carbonyl radical as defined above. Examples of such radicals include furoyl and nicotinyl.

The term “heteroaralkanoyl” embraces heteroaralkyl radicals, as defined herein, attached to an carbonyl radical as defined above. Examples of such radicals include, for example, pyridylacetyl and furylbutyryl.

The term “heteroaralkoxy” embraces oxy-containing heteroaralkyl radicals attached through an oxygen atom to other radicals. More preferred heteroaralkoxy radicals are “heteroaralkoxy” radicals having heteroaryl radicals attached to alkoxy radical as described above. The term “heterocyclylalkoxy” embraces oxy-containing heterocyclylalkyl radicals attached through an oxygen atom to other radicals.

The term “haloheteroaryloxyalkyl” embraces heteroaryloxyalkyl radicals, as defined above, wherein one to four halo radicals are attached to an heteroaryloxy group.

The term “heteroarylamino” embraces heteroaryl radicals, as defined above, attached to an amino group. Examples of such radicals include pyridylamino. The term “heterocyclylamino” embraces heterocyclyl radicals, as defined above, attached to an amino group.

The term “heteroaralkylamino” embraces heteroaralkyl radicals, as defined above, attached to an amino group. Examples of such radicals include pyridylmethylamino. The term “heterocyclylalkylamino” embraces heterocyclylalkyl radicals, as defined above, attached to an amino group.

The term “heteroaryloxy” embraces heteroaryl radicals, as defined above, attached to an oxy group. Examples of such radicals include 2-thiophenyloxy, 2-pyrimidyloxy, 2-pyridyloxy, 3-pyridyloxy, and 4-pyridyloxy. The term “heterocyclyloxy” embraces heterocyclyl radicals, as defined above, attached to an oxy group.

The term “heteroaryloxyalkyl” embraces heteroaryloxy radicals, as defined above, attached to an alkyl group. Examples of such radicals include 2-pyridyloxymethyl, 3-pyridyloxyethyl, and 4-pyridyloxymethyl. The term “heterocyclyloxyalkyl” embraces heterocyclyloxy radicals, as defined above, attached to an alkyl group.

The term “arylthio” embraces aryl radicals, as defined above, attached to an sulfur atom. Examples of such radicals include phenylthio.

The term “arylthioalkyl” embraces arylthio radicals, as defined above, attached to an alkyl group. Examples of such radicals include phenylthiomethyl.

The term “alkylthioalkyl” embraces alkylthio radicals, as defined above, attached to an alkyl group. Examples of such radicals include methylthiomethyl. The term “alkoxyalkyl” embraces alkoxy radicals, as defined above, attached to an alkyl group. Examples of such radicals include methoxymethyl.

The term “carbonyl” denotes a carbon radical having two of the four covalent bonds shared with an oxygen atom. The term “carboxy” embraces a hydroxyl radical, as defined above, attached to one of two unshared bonds in a carbonyl group. The term “carboxamido” embraces amino, monoalkylamino, dialkylamino, monocycloalkylamino, alkylcycloalkylamino, dicycloalkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, nitrogen containing heterocyclyl, heterocyclylamino, N-alkyl-N-heterocyclylamino, heteroarylamino, and heteroaralkylamino radicals, attached to one of two unshared bonds in a carbonyl group. The term “carboxamidoalkyl” embraces carboxamido radicals, as defined above, attached to an alkyl group. The term “carboxyalkyl” embraces a carboxy radical, as defined above, attached to an alkyl group. The term “carboalkoxy” embraces alkoxy radicals, as defined above, attached to one of two unshared bonds in a carbonyl group. The term “carboaralkoxy” embraces aralkoxy radicals, as defined above, attached to one of two unshared bonds in a carbonyl group. The term “monocarboalkoxyalkyl” embraces one carboalkoxy radical, as defined above, attached to an alkyl group. The term “dicarboalkoxyalkyl” embraces two carboalkoxy radicals, as defined above, attached to an alkylene group. The term “monocyanoalkyl” embraces one cyano radical, as defined above, attached to an alkyl group. The term “dicyanoalkylene” embraces two cyano radicals, as defined above, attached to an alkyl group. The term “carboalkoxycyanoalkyl” embraces one cyano radical, as defined above, attached to an carboalkoxyalkyl group.

The term “acyl”, alone or in combination, means a carbonyl or thionocarbonyl group bonded to a radical selected from, for example, hydrido, alkyl, alkenyl, alkynyl, haloalkyl, alkoxy, alkoxyalkyl, haloalkoxy, aryl, heterocyclyl, heteroaryl, alkylsulfinylalkyl, alkylsulfonylalkyl, aralkyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl, alkylthio, arylthio, amino, alkylamino, dialkylamino, aralkoxy, arylthio, and alkylthioalkyl. Examples of “acyl” are formyl, acetyl, benzoyl, trifluoroacetyl, phthaloyl, malonyl, nicotinyl, and the like. The term “haloalkanoyl” embraces one or more halo radicals, as defined herein, attached to an alkanoyl radical as defined above. Examples of such radicals include, for example, chloroacetyl, trifluoroacetyl, bromopropanoyl, and heptafluorobutanoyl.

The term “phosphono” embraces a pentavalent phosphorus attached with two covalent bonds to an oxygen radical. The term “dialkoxyphosphono” denotes two alkoxy radicals, as defined above, attached to a phosphono radical with two covalent bonds. The term “diaralkoxyphosphono” denotes two aralkoxy radicals, as defined above, attached to a phosphono radical with two covalent bonds. The term “dialkoxyphosphonoalkyl” denotes dialkoxyphosphono radicals, as defined above, attached to an alkyl radical. The term “diaralkoxyphosphonoalkyl” denotes diaralkoxyphosphono radicals, as defined above, attached to an alkyl radical.

The term “amino” denotes a nitrogen atom containing two substituents such as hydrido, hydroxy or alkyl and having one covalent bond available for bonding to a single atom such as carbon. Examples of such amino radicals include, for example, —NH₂, —NHCH₃, —NHOH, and —NHOCH₃. The term “imino” denotes a nitrogen atom containing one substituent such as hydrido, hydroxy or alkyl and having two covalent bonds available for bonding to a single atom such as carbon. Examples of such imino radicals include, for example, ═NH, ═NCH₃, ═NOH, and ═NOCH₃. The term “imino carbonyl” denotes a carbon radical having two of the four covalent bond sites shared with an imino group. Examples of such imino carbonyl radicals include, for example, C═NH, C═NCH₃, C═NOH, and C═NOCH₃. The term “amidino” embraces a substituted or unsubstituted amino group bonded to one of two available bonds of an iminocarbonyl radical. Examples of such amidino radicals include, for example, NH₂—C═NH, NH₂—C═NCH₃, NH₂—C═NOCH₃ and CH₃NH—C═NOH. The term “guanidino” denotes an amidino group bonded to an amino group as defined above where said amino group can be bonded to a third group. Examples of such guanidino radicals include, for example, NH₂—C(NH)—NH—, NH₂—C(NCH₃)—NH—, NH₂—C(NOCH₃)—NH—, and CH₃NH—C(NOH)—NH—.

The term “sulfonium” denotes a positively charged trivalent sulfur atom where said sulfur is substituted with three carbon based groups such as alkyl, alkenyl, aralkyl, or aryl. The term “dialkyl sulfonium” denotes a sulfonium group where said sulfur is substituted with two alkyl groups. Examples of such dialkylsulfonium radicals include, for example, (CH₃)₂S⁺—. The term “dialkyl sulfonium alkyl” denotes a dialkyl sulfonium group where said group is bonded to one bond of an alkylene group as defined above. Examples of such dialkylsulfoniumalkyl radicals include (CH₃)₂S⁺—CH₂CH₂—.

The term “phosphonium” denotes a positively charged tetravalent phosphorus atom where said phosphorus is substituted with four carbon based groups such as alkyl, alkenyl, aralkyl, or aryl. The term “trialkyl phosphonium” denotes a phosphonium group where said phosphorus is substituted with three alkyl groups. Examples of such trialkylphosphonium radicals include, for example, (CH₃)₃—P^(+—.)

Said “alkyl”, “alkenyl”, “alkynyl”, “alkanoyl”, “alkylene”, “alkenylene”, “hydroxyalkyl”, “haloalkyl”, “haloalkylene”, “haloalkenyl”, “alkoxy”, “alkenyloxy”, “alkenyloxyalkyl”, “alkoxyalkyl”, “aryl”, “perhaloaryl”, “haloalkoxy”, “haloalkoxyalkyl”, “haloalkenyloxy”, “haloalkenyloxyalkyl”, “alkylenedioxy”, “haloalkylenedioxy”, “heterocyclyl”, “heteroaryl”, “hydroxyhaloalkyl”, “alkylsulfonyl”, “haloalkylsulfonyl”, “alkylsulfonylalkyl”, “haloalkylsulfonylalkyl”, “alkylsulfinyl”, “alkylsulfinylalkyl”, “haloalkylsulfinylalkyl”, “aralkyl”, “heteroaralkyl”, “perhaloaralkyl”, “aralkylsulfonyl”, “aralkylsulfonylalkyl”, “aralkylsulfinyl”, “aralkylsulfinylalkyl”, “cycloalkyl”, “cycloalkylalkanoyl”, “cycloalkylalkyl”, “cycloalkenyl”, “halocycloalkyl”, “halocycloalkenyl”, “cycloalkylsulfinyl”, “cycloalkylsulfinylalkyl”, “cycloalkylsulfonyl”, “cycloalkylsulfonylalkyl”, “cycloalkoxy”, “cycloalkoxyalkyl”, “cycloalkylalkoxy”, “cycloalkenyloxy”, “cycloalkenyloxyalkyl”, “cycloalkylenedioxy”, “halocycloalkoxy”, “halocycloalkoxyalkyl”, “halocycloalkenyloxy”, “halocycloalkenyloxyalkyl”, “alkylthio”, “haloalkylthio”, “alkylsulfinyl”, “amino”, “oxy”, “thio”, “alkylamino”, “arylamino”, “aralkylamino”, “arylsulfinyl”, “arylsulfinylalkyl”, “arylsulfonyl”, “arylsulfonylalkyl”, “heteroarylsulfinyl”, “heteroarylsulfinylalkyl”, “heteroaryl sulfonyl”, “heteroarylsulfonylalkyl”, “heteroarylamino”, “heteroaralkylamino”, “heteroaryloxy”, “heteroaryloxylalkyl”, “aryloxy”, “aroyl”, “aralkanoyl”, “aralkoxy”, “aryloxyalkyl”, “haloaryloxyalkyl”, “heteroaroyl”, “heteroaralkanoyl”, “heteroaralkoxy”, “heteroaralkoxyalkyl”, “arylthio”, “arylthioalkyl”, “alkoxyalkyl”, “acyl”, “amidino”, “guanidino”, “dialkylsulfonium”, “trialkylphosphonium”, and “dialkylsulfoniumalkyl” Groups defined above may optionally have 1 or more non-hydrido substituents such as amidino, guanidino, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, perhaloaralkyl, aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl, aralkylsulfinylalkyl, halocycloalkyl, halocycloalkenyl, cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl, cycloalkylsulfonylalkyl, heteroarylamino, N-heteroarylamino-N-alkylamino, heteroaralkylamino, heteroaryloxy, heteroaryloxylalkyl, haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl, haloalkoxylalkyl, heteroaralkoxy, cycloalkoxy, cycloalkenyloxy, cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl, cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino, thio, nitro, alkylamino, alkylthio, alkylthioalkyl, arylamino, aralkylamino, arylthio, arylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl, alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl, heteroarylsulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl, alkylsulfonylalkyl, haloalkylsulfinyl alkyl, haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl, amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl, monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl, monoalkyl monoaryl amidosulfonyl, arylsulfinyl, arylsulfonyl, heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky, alkylenedioxy, haloalkylenedioxy, cycloalkyl, cycloalkylalkanoyl, cycloalkenyl, cycloalkylalkyl, cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, aminoalkyl, hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy, aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially saturated heterocyclyl, heteroaryl, heteroaryloxy, heteroaryloxyalkyl, arylalkyl, heteroaralkyl, arylalkenyl, heteroarylalkenyl, carboxyalkyl, carboalkoxy, alkoxycarbonyl, carboaralkoxy, carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy, phosphono, phosphonoalkyl, diaralkoxyphosphono, and diaralkoxyphosphonoalkyl.

The term “spacer” can include a covalent bond and a linear moiety having a backbone of 1 to 7 contiguous atoms. The spacer may have 1 to 7 atoms of a univalent or multi-valent chain. Univalent chains may be constituted by a radical selected from ═C(H)—, ═C(R^(2a))—, —O—, —S—, —S(O)—, —S(O)₂—, —NH—, —N(R^(2a))—, —N═, —CH(OH)—, ═C(OH)—, —CH(OR^(2a))—, ═C(OR^(2a))—, and —C(O)— wherein R^(2a) is selected from alkyl, alkenyl, alkynyl, aryl, heteroaryl, aralkyl, aryloxyalkyl, alkoxyalkyl, alkylthioalkyl, arylthioalkyl, cycloalkyl, cycloalkylalkyl, haloalkyl, haloalkenyl, haloalkoxyalkyl, perhaloaralkyl, heteroarylalkyl, heteroaryloxyalkyl, heteroarylthioalkyl, and heteroarylalkenyl. Multi-valent chains may consist of a straight chain of 1 or 2 or 3 or 4 or 5 or 6 or 7 atoms or a straight chain of 1 or 2 or 3 or 4 or 5 or 6 atoms with a side chain. The chain may be constituted of one or more radicals selected from: alkylene, alkenyl, —O—, —O—CH₂—, —S—CH₂—, —CH₂CH₂—, ethenyl, —CH═CH(OH)—, —OCH₂O—, —O(CH₂)₂O—, —NHCH₂—, —OCH(R^(2a))O—, —O(CH₂CHR^(2a))O—, —OCF₂O—, —O(CF₂)₂O—, —S—, —S(O)—, —S(O)₂—, —N(H)—, —N(H)O—, —N(R^(2a))O—, —N(R^(2a))—, —C(O)—, —C(O)NH—, —C(O)NR^(2a)—, —N═—OCH₂—, —SCH₂—, S(O)CH₂—, —CH₂C(O)—, —CH(OH)—, ═C(OH)—, —CH(OR^(2a)), ═C(OR^(2a))—, S(O)₂CH₂—, and —NR^(2a) CH₂— and many other radicals defined above or generally known or ascertained by one of skill-in-the art. Side chains may include substituents such as I or more non-hydrido substituents such as amidino, guanidino, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, perhaloaralkyl, aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl, aralkyl sulfinylalkyl, halocycloalkyl, halocycloalkenyl, cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl, cycloalkyl sulfonylalkyl, heteroarylamino, N-heteroarylamino-N-alkylamino, heteroaralkylamino, heteroaryloxy, heteroaryloxylalkyl, haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl, haloalkoxylalkyl, heteroaralkoxy, cycloalkoxy, cycloalkenyloxy, cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl, cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino, thio, nitro, alkylamino, alkylthio, alkylthioalkyl, arylamino, aralkylamino, arylthio, arylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl, alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl, heteroaryl sulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl, alkylsulfonylalkyl, haloalkyl sulfinylalkyl, haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl, amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl, monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl, monoalkyl monoaryl amidosulfonyl, arylsulfinyl, arylsulfonyl, heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky, alkylenedioxy, haloalkylenedioxy, cycloalkyl, cycloalkenyl, cycloalkylalkyl, cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, aminoalkyl, hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy, aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially saturated heterocyclyl, heteroaryl, heteroaryloxy, heteroaryloxyalkyl, arylalkyl, heteroarylalkyl, arylalkenyl, heteroarylalkenyl, carboxyalkyl, carboalkoxy, carboaralkoxy, carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy, phosphono, phosphonoalkyl, diaralkoxyphosphono, and diaralkoxyphosphonoalkyl.

Compounds of the present invention can exist in tautomeric, geometric or stereoisomeric forms. The present invention contemplates all such compounds, including cis- and trans-geometric isomers, E- and Z-geometric isomers, R- and S-enantiomers, diastereomers, d-isomers, 1-isomers, the racemic mixtures thereof and other mixtures thereof, as falling within the scope of the invention. Pharmaceutically acceptable sales of such tautomeric, geometric or stereoisomeric forms are also included within the invention.

The terms “cis” and “trans” denote a form of geometric isomerism in which two carbon atoms connected by a double bond will each have a hydrogen atom on the same side of the double bond (“cis”) or on opposite sides of the double bond (“trans”).

Some of the compounds described contain alkenyl groups, and are meant to include both cis and trans or “E” and “Z” geometric forms.

Some of the compounds described contain one or more stereocenters and are meant to include R, S, and mixtures of R and S forms for each stereocenter present.

Some of the compounds described herein may contain one or more ketonic or aldehydic carbonyl groups or combinations thereof alone or as part of a heterocyclic ring system. Such carbonyl groups may exist in part or principally in the “keto” form and in part or principally as one or more “enol” forms of each aldehyde and ketone group present. Compounds of the present invention having aldehydic or ketonic carbonyl groups are meant to include both “keto” and “enol” tautomeric forms.

Some of the compounds described herein may contain one or more amide carbonyl groups or combinations thereof alone or as part of a heterocyclic ring system. Such carbonyl groups may exist in part or principally in the “keto” form and in part or principally as one or more “enol” forms of each amide group present. Compounds of the present invention having amidic carbonyl groups are meant to include both “keto” and “enol” tautomeric forms. Said amide carbonyl groups may be both oxo (C═O) and thiono (C═S) in type.

Some of the compounds described herein may contain one or more imine or enamine groups or combinations thereof. Such groups may exist in part or principally in the “imine” form and in part or principally as one or more “enamine” forms of each group present. Compounds of the present invention having said imine or enamine groups are meant to include both “imine” and “enamine” tautomeric forms.

The present invention also comprises a treatment and prophylaxis in anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular disease in a subject, comprising administering to the subject having such disorder a therapeutically-effective amount of a compound of Formula (I):

or a pharmaceutically-acceptable salt thereof.

As a further embodiment, compounds of the present invention of Formula (1) or a pharmaceutically-acceptable salt thereof as defined above, comprise a treatment and prophylaxis of coronary artery disease, cerebrovascular disease and other coagulation cascade related disorders in a subject, comprising administering to the subject having such disorder a therapeutically-effective amount of compounds of formula (I) of the present invention or a pharmaceutically-acceptable salt thereof.

Compounds of the present invention of Formula (I) or a pharmaceutically-acceptable salt thereof can also be used whenever inhibition of blood coagulation is required such as to prevent coagulation of stored whole blood and to prevent coagulation in other biological samples for testing or storage. Thus coagulation inhibitors of the present inhibition can be added to or contacted with stored whole blood and any medium containing or suspected of containing plasma coagulation factors and in which it is desired that blood coagulation be inhibited, e.g. when contacting the mammal's blood with material selected from the group consisting of vascular grafts, stents, orthopedic prothesis, cardiac prosthesis, and extracorporeal circulation systems.

Compounds of Formula (I) are capable of inhibiting activity of serine proteases related to the coagulation cascade, and thus could be used in the manufacture of a medicament, a method for the prophylactic or therapeutic treatment of diseases mediated by coagulation cascade serine proteases, such as inhibiting the formation of blood platelet aggregates, inhibiting the formation of fibrin, inhibiting thrombus formation, and inhibiting embolus formation in a mammal, in blood, in blood products, and in mammalian organs. The compounds also can be used for treating or preventing unstable angina, refractory angina, myocardial infarction, transient ischernic attacks, atrial fibrillation, thrombotic stroke, embolic stroke, deep vein thrombosis, disseminated intravascular coagulation, ocular build up of fibrin, and reocclusion or restenosis of recanalized vessels in a mammal. The compounds also can be used to study the mechanism of action of coagulation cascade serine proteases to enable the design of better inhibitors and development of better assay methods. The compounds of Formula (1) would be also useful in prevention of cerebral vascular accident (CVA) or stroke.

Also included in the family of compounds of Formula (I) are the pharmaceutically-acceptable salts thereof. The term “pharmaceutically-acceptable salt” embraces salts commonly used to form alkali metal salts and to form addition salts of free acids or free bases. The nature of the salt is not critical, provided that it is pharmaceutically acceptable. Suitable pharmaceutically-acceptable acid addition salts of compounds of Formula (I) may be prepared from inorganic acid or from an organic acid. Examples of such inorganic acids are hydrochloric, hydrobromic, hydroiodic, nitric, carbonic, sulfuric and phosphoric acid. Appropriate organic acids may be selected from aliphatic, cycloaliphatic, aromatic, araliphatic, heterocyclic, carboxylic and sulfonic classes of organic acids, examples of which are formic, acetic, propionic, succinic, glycolic, gluconic, lactic, malic, tartaric, citric, ascorbic, glucoronic, maleic, fumaric, pyruvic, aspartic, glutarnic, benzoic, anthranilic, mesylic, salicylic, p-hydroxybenzoic, phenylacetic, mandelic, embonic (pamoic), methanesulfonic, ethylsulfonic, benzenesulfonic, sulfanilic, stearic, cyclohexylaminosulfonic, algenic, galacturonic acid. Suitable pharmaceutically-acceptable base addition salts of compounds of Formula (1) include metallic salts made from aluminum, calcium, lithium, magnesium, potassium, sodium and zinc or organic salts made from N,N′-dibenzylethyleneldiamine, choline, chloroprocaine, diethanolamine, ethylenediamine, meglumine (N-methylglucamine) and procain. All of these salts may be prepared by conventional means from the corresponding compound of Formula (I) by reacting, for example, the appropriate acid or base with the compound of Formula (I).

The present invention also comprises a pharmaceutical composition comprising a therapeutically-effective amount of a compound of Formulas (I) in association with at least one pharmaceutically-acceptable carrier, adjuvant or diluent. Pharmaceutical compositions of the present invention can comprise the active compounds of Formula (1) in association with one or more non-toxic, pharmaceutically-acceptable carriers and/or diluents and/or adjuvants (collectively referred to herein as “carrier” materials) and, if desired, other active ingredients. The active compounds of the present invention may be administered by any suitable route, preferably in the form of a pharmaceutical composition adapted to such a route, and in a dose effective for the treatment intended.

The active compounds and composition may, for example, be administered orally, intravascularly, intraperitoneally, subcutaneously, intramuscularly, oculary, or topically. For treating ocular build up of fibrin, the compounds may be administered intraocularly or topically as well as orally or parenterally.

The compounds can be administered in the form of a depot injection or implant preparation which may be formulated in such a manner as to permit a sustained release of the active ingredient. The active ingredient can be compressed into pellets or small cylinders and implanted subcutaneously or intramusculary as depot injections or implants. Implants may employ inert materials such as biodegradable polymers or synthetic silicones, for example, Silastic, silicone rubber or other silicon containing polymers.

The compounds can also be administered in the form of liposome delivery systems, such as small unilamellar vesicles, large unilamellar vesicles and multilamellar vesicles. Liposomes can be formed from a variety of phospholipids, such as cholesterol, stearylamine or phosphatidylcholines.

The compounds may also be delivered by the use of monoclonal antibodies as individual carriers to which the compound molecules are coupled.

The compounds may also be coupled with soluble polymers as targetable drug carriers. Such polymers can include polyvinylpyrrolidone, pyran copolymer, polyhydroxy-propyl-methacryl amide-phenol, polyhydroxyethyl-aspartamide-phenol, or ployethyleneoxide-polylysine substituted with palmitoyl residues. Furthermore, the compounds may be coupled to a class of biodegradable polymers useful in achieving controlled release of a drug, for example, polylactic acid, polyglycolic acid, copolymers of polylactic and polyglycolic acid, polyepsilon caprolactone, polyhydroxy butyric acid, polyorthoesters, polyacetals, polydihydropyrans, polycyanoacrylates and cross linked or amphitpathic block copolymers of hydrogels.

For oral administration, the pharmaceutical composition may be in the form of, for example, tablets, capsules (each of which includes sustained release or timed release formulations), pills, powders, granules, elixers, tinctures, suspensions, liquids including syrups, and emulsions. The pharmaceutical composition is preferably made in the form of a dosage unit containing a particular amount of the active ingredient. Examples of such dosage units are tablets or capsules. The active ingredient may also be administered by injection as a composition wherein, for example, saline, dextrose or water may be used as a suitable carrier.

The amount of therapeutically active compounds which are administered and the dosage regimen for treating a disease condition with the compounds and/or compositions of this invention depends on a variety of factors, including the age, weight, sex and medical condition of the subject, the severity of the disease, the route and frequency of administration, and the particular compound employed, and thus may vary widely.

The pharmaceutical compositions may contain active ingredients in the range of about 0.1 to 2000 mg, and preferably in the range of about 0.5 to 500 mg. A daily dose of about 0.01 to 100 mg/kg body weight, and preferably between about 0.5 and about 20 mg/kg body weight, may be appropriate. The daily dose can be administered in one to four doses per day.

The compounds may be formulated in topical ointment or cream, or as a suppository, containing the active ingredients in a total amount of, for example, 0.075 to 30% w/w, preferably 0.2 to 20% w/w and most preferably 0.4 to 15% w/w. When formulated in an ointment, the active ingredients may be employed with either paraffinic or a water-miscible ointment base.

Alternatively, the active ingredients may be formulated in a cream with an oil-in-water cream base. If desired, the aqueous phase of the cream base may include, for example at least 30% w/w of a polyhydric alcohol such as propylene glycol, butane-1,3-diol, mannitol, sorbitol, glycerol, polyethylene glycol and mixtures thereof. The topical formulation may desirably include a compound which enhances absorption or penetration of the active ingredient through the skin or other affected areas. Examples of such dermal penetration enhancers include dimethylsulfoxide and related analogs. The compounds-of this invention can also be administered by a transdermal device. Preferably topical administration will be accomplished using a patch either of the reservoir and porous membrane type or of a solid matrix variety. In either case, the active agent is delivered continuously from the reservoir or microcapsules through a membrane into the active agent permeable adhesive, which is in contact with the skin or mucosa of the recipient. If the active agent is absorbed through the skin, a controlled and predetermined flow of the active agent is administered to the recipient. In the case of microcapsules, the encapsulating agent may also function as the membrane.

The oily phase of the emulsions of this invention may be constituted from known ingredients in a known manner. While the phase may comprise merely an emulsifier, it may comprise a mixture of at least one emulsifier with a fat or an oil or with both a fat and an oil. Preferably, a hydrophilic emulsifier is included together with a lipophilic emulsifier which acts as a stabilizer. It is also preferred to include both an oil and a fat. Together, the emulsifier(s) with or without stabilizer(s) make-up the so-called emulsifying wax, and the wax together with the oil and fat make up the so-called emulsifying ointment base which forms the oily dispersed phase of the cream formulations. Emulsifiers and emulsion stabilizers suitable for use in the formulation of the present invention include Tween 60, Span 80, cetostearyl alcohol, myristyl alcohol, glyceryl monostearate, and sodium lauryl sulfate, among others.

The choice of suitable oils or fats for the formulation is based on achieving the desired cosmetic properties, since the solubility of the active compound in most oils likely to be used in pharmaceutical emulsion formulations is very low. Thus, the cream should preferably be a non-greasy, non-staining and washable product with suitable consistency to avoid leakage from tubes or other containers. Straight or branched chain, mono- or dibasic alkyl esters such as diisoadipate, isocetyl stearate, propylene glycol diester of coconut fatty acids, isopropyl myristate, decyl oleate, isopropyl palmitate, butyl stearate, 2-ethylhexyl palmitate or a blend of branched chain esters may be used. These may be used alone or in combination depending on the properties required. Alternatively, high melting point lipids such as white soft paraffin and/or liquid paraffin or other mineral oils can be used.

For therapeutic purposes, the active compounds of the present invention are ordinarily combined with one or more adjuvants appropriate to the indicated route of administration. If administered per os, the compounds may be admixed with lactose, sucrose, starch powder, cellulose esters of alkanoic acids, cellulose alkyl esters, talc, stearic acid, magnesium stearate, magnesium oxide, sodium and calcium salts of phosphoric and sulfuric acids, gelatin, acacia gum, sodium alginate, polyvinylpyrrolidone, and/or polyvinyl alcohol, and then tableted or encapsulated for convenient administration. Such capsules or tablets may contain a controlled-release formulation as may be provided in a dispersion of active compound in hydroxypropylmethyl cellulose. Formulations for parenteral administration may be in the form of aqueous or non-aqueous isotonic sterile injection solutions or suspensions. These solutions and suspensions may be prepared from sterile powders or granules having one or more of the carriers or diluents mentioned for use in the formulations for oral administration. The compounds may be dissolved in water, polyethylene glycol, propylene glycol, ethanol, corn oil, cottonseed oil, peanut oil, sesame oil, benzyl alcohol, sodium chloride, and/or various buffers. Other adjuvants and modes of administration are well and widely known in the pharmaceutical art.

In practicing the methods of the present invention for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular disease, the compounds and pharmaceutical compositions of the present invention are administered alone or in combination with one another, or in combination with other therapeutics or in vivo diagnostic agents. The coagulation cascade inhibitors of the present invention can also be co-administered with suitable anti-platelet agreggation agents, including, but not limited to ticlopidine or clopidrogel, fibrinogen receptor antagonists (e.g. to treat or prevent unstable angina or to prevent reocculsion after angioplasty and restenosis), anti-coagulants such as aspirin, warfarin or heparins, thrombolytic agents such as plasminogen activators or streptokinase to achieve synergistic effects in the treatment of various pathologies, lipid lowering agents including antihypercholesterolemics (e.g. HMG CoA reductase inhibitors such as mevastatin, lovastatin, simvastatin, pravastatin, and fluvastatin, HMG CoA synthatase inhibitors, etc.), anti-diabetic drugs, or other cardiovascular agents (loop diuretics, thiazidei type diuretics, nitrates, aldosterone antagonistics (i.e., spironolactone and epoxymexlerenone), angiotensin converting enzyme (e.g. ACE) inhibitors, angiotensin II receptor antagonists, beta-blockers, antiarrythmics, anti-hypertension agents, and calcium channel blockers) to treat or prevent atheriosclerosis. For example, patients suffering from coronary artery disease, and patients subjected to angioplasty procedures, would benefit from coadministration of fibrinogen receptor antagonists and coagulation cascade inhibitors of the present invention. Also, coagulation cascade inhibitors could enhance the efficiency of tissue plasminogen activator-mediated thrombolytic reperfusion.

Typical doses of coagulation cascade inhibitors of the present invention with other suitable anti-platelet agents, anticoagulation agents, cardiovascular therapeutic agents, or thrombolytic agents may be the same as those doses of coagulation cascade inhibitors administered without coadministration of additional anti-platelet agents, anticoagulation agents, cardiovascular therapeutic agents, or thrombolytic agents, or may be substantially less than those doses of coagulation cascade inhibitors administered without coadministration of additional anti-platelet agents, anticoagulation agents, cardiovascular therapeutic agents, or thrombolytic agents, depending on a patient's therapeutic needs.

The present novel methods preferably employ compounds which selectively inhibit human TF-VIIA over the inhibition of both human Thrombin II and human factor Xa. Preferably, the compounds have a human TF-VIIA IC₅₀ of less than 0.5 μM and also have a selectivity ratio of TF-VIIA inhibition over both human Thrombin II and human factor Xa inhibition of at least 10, and more preferably at least 100. Even more preferably, the compounds have a human TF-VIIA IC₅₀ of less than 0.1 μM and also have a selectivity ratio of TF-VIIA inhibition over both human Thrombin II and human factor Xa inhibition of at least 1000, and most preferably at least 10,000.

All mentioned references are incorporated by reference as if here written.

Although this invention has been described with respect to specific embodiments, the details of these embodiments are not to be construed as limitations. The following examples are provided to illustrate the present invention and are not intended to limit the scope thereof. Without further elaboration, it is believed that one skilled in the art can, using the preceding descriptions, utilize the present invention to its fullest extent. Therefore the following preferred specific embodiments are to be construed as merely illustrative and not limitative of the remainder of the disclosure in any way whatsoever. Compounds containing multiple variations of the structural modifications illustrated in the schemes or the following Examples are also contemplated. Those skilled in the art will readily understand that known variations of the conditions and processes of the following preparative procedures can be used to prepare these compounds.

One skilled in the art may use these generic methods to prepare the following specific examples, which have been or may be properly characterized by ¹H NMR, mass spectrometry, elemental composition, and similar procedures. These compounds also may be formed in vivo.

The following examples contain detailed descriptions of the methods of preparation of compounds of Formula (1). These detailed descriptions fall within the scope and are presented for illustrative purposes only and are not intended as a restriction on the scope of the invention. All parts are by weight and temperatures are Degrees centigrade unless otherwise indicated.

The following general synthetic sequences are useful in making the present invention. Abbreviations used in the schemes are as follows: “AA” represents amino acids, “AcCN” represents acetonitrile, “AcOH” represents acetic acid, “BINAP” represents 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl, “BnOH” represents benzyl alcohol, “BnCHO” represents 2-phenylethanal, “BnSO₂Cl” represents benzylsulfonyl chloride, “Boc” represents tert-butyloxycarbonyl, “BOP” represents benzotriazol-1-yl-oxy-tris-(dimethylamino), “bu” represents butyl, “dba” represents dibenzylideneacetone, “DCC” represents 1,3-dicyclohexylcarbodiimide, “DCM” represents dichloromethane or methylene chloride, “DIBAH” or “DIBAL” represents diisobutylaluminum hydride, “DMF” represents dimethylformamide, “DMSO” represents dimethylsulfoxide, “DPPA” represents diphenylphosphorylazide”, “EDC” represents 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride, “Fmoc” represents 9-fluorenylmethoxycarbonyl, “HOBT” represents hydroxybenzoltriazole”, “LDA” represents lithium diisopropylamide, “NMM” represents N-methylmorpholine, “Ph” represents phenyl or aryl, “PHTH” represents a phthaloyl group, “pnZ” represents 4 nitrobenzyloxycarbonyl, “PTC” represents a phase transfer catalyst, “py” represents pyridine, “RNH₂” represents a primary organic amine, “p-TsOH” represents paratoluenesulfonic acid, “TBAF” represents tetrabutylammonium fluoride, “TBTU” represents 2-(1H-benzotriozole-1-yl)-1,1,3,3-tetramethyl uronium tetrafluoroborate, “TEA” represents triethylamine, “TFA” represents trifluoroacetic acid, “THF” represents tetrahydrofuran, “TMS” represents trimethylsilyl, “TMSCN” represents trimethylsilyl cyanide, and “Cbz” or “Z” represents benzyloxycarbonyl.

GENERAL SYNTHETIC PROCEDURES AND SPECIFIC EXAMPLES

The 4-pyrone compounds of the present invention can be synthesized, for example, according to the following procedures and Schemes given below.

Schemes 1, 2, 3, and 4 above summarize generic procedures that permit the preparation of a wide variety of the compounds of the present invention through the ability to introduce numerous R² substituents represented by Z^(o)-Q, a wide variety of amino substituting groups represented by B—, B—CH₂, B—CO, and B—SO₂, and a large number of amide forming Y groups at the carboxylic acid group in which E^(o) is C(O)NH. Example 1 below shows the preparation of a compound wherein X^(o) is hydrido.

Example 1

EX-1A (Step A)

A solution of 2,2-dimethyl 1,3-dioxane-4-dione (1 mol) and pyridine (2 mol) in dichloromethane at 0° C. will be treated with 4-penenoyl chloride. The reaction mixture is stirred for 1 hour at 0° C., and an additional hour at room temperature. The volatile components is removed in vacuo, and the residue is dissolved in t-butanol. The reaction mixture is heated for 4 hours. After solvent removal, the red-brown residue is treated with 500 mL of ethyl acetate, and the insoluble material is filtered. Evaporation of the filtrate will afford a dark red oil 1.

EX-1B (Step B)

A mixture of 1 and N,N-dimethylformamide dimethyl acetal (excess) is heated to 80° C. for two hours. The volatile components is removed in vacuo, and the crude residue is purified by flash chromatography which will afford a yellow oil 2.

EX-1C (Step C)

A dry ice cooled solution of LHMDS (2.5 mmol) in THF is treated with 3-nitrobenzoyl chloride (1.2 mmol) and 2 (1 mmol) as a solution in THF. The dry ice bath is removed, and the reaction mixture is stirred for 5 minutes. Diethyl ether is added to the reaction mixture followed by 3 M HCl. The resulting reaction mixture is stirred for an additional 1.5 hours. The organic layer is separated and washed with saturated aqueous NaHCO₃ and brine. After drying over Na₂SO₄, and concentration, the crude product is purified by flash chromatography to afford a yellow oil 3.

EX-1D(Step D)

A solution of 3 in dichloromethane is treated with trifluoroacetic acid. After stirring the reaction mixture for 1 hour, the mixture is concentrated in vacuo. The residue is dissolved in 4N HCl in dioxane, and the volatile components is removed to afford a yellow solid 4.

EX-1E (Step E)

A mixture of 4 (1 mmol), dry t-butanol, diphenyl phosphoryl azide (DPPA) (1 mmol), and triethyl amine is heated to reflux temperature for 48 hours. Removal of the volatiles gives a residue which is purified by column chromatography to afford a yellow oil 5.

EX-1F (Step F)

A solution of 5 is treated with a solution of 4N HCl in dioxane. The reaction mixture is stirred at room temperature for 2 hours. After evaporation of the solvent, the desired compound 6 is isolated.

EX-1G (Step G)

A solution of acetone (1.5 mmol) in THF (1 mL) is added to a solution of 6 (1 mmol) in THF (4 mL). This mixture is treated with sodium triacetoxyborohydride (1.5 mmol). The reaction mixture is quenched with NH₄Cl, and extracted with ether. The combined organic layers is dried over MgSO₄, filtered, and concentrated. The residue is purified via column chromatography affording the desired compound 7.

EX-1H (Step H)

A solution of 7 (2 mmol) in acetone (10 mL) is treated with 0.25 mL (2 mol %) of a 4 wt % solution of OsO4 in water and 2.6 mL (6.9 mmol of Cr^(VI)) of Jones reagent. After stirring the mixture for 20 hours at room temperature, 1 mL of 2-propanol is added followed by 0.3 g of NaHSO₃. After diluting the mixture with 10 mL of water, the mixture is stirred until a dark green, homogeneous solution is produced. This solution is diluted with 20 mL of water and extracted with six 10 mL portions of ethyl acetate. The organic extracts is combined and dried over MgSO₄. After concentration of the organic components, the product 8 is isolated by recrystallization.

EX-1I (Step I)

Compound 8 (1 mmol), EDC (1.3 mmol), and HOBt (1.3 mmol) is mixed in DMF, and the mixture is stirred at 20° C. for 15 minutes. To this mixture is added a solution of benzyl-[[(4-aminomethylphenyl)iminomethyl]amino]carbamate hydrogen chloride salt (13 mmol) and diisopropyl ethyl amine (13 mmol) in DMF. Typical aqueous work-up followed by chromatographic purification provides the desired product 9.

EX-1J (Step J)

Compound 9 (1 mmol), p-toluene sulfonic acid mono hydrate (1 mmol) and 10% Pd on activated carbon (0.1 mmol) is mixed with methanol. The mixture is stirred for 2 h under hydrogen atmosphere which is introduced and maintained through a rubber balloon. After filtering off the catalyst and removing the methanol, the desired product of Example 1 is isolated as the TFA salt after reverse phase chromatography.

Formula (I) compounds of this invention possessing hydroxyl, thiol, and amine functional groups can be converted to a wide variety derivatives. A hydroxyl group in the form of an alcohol or phenol can be readily converted to esters of carboxylic, sulfonic, carbamic, phosphonic, and phosphoric acids. Acylation to form a carboxylic acid ester is readily effected using a suitable acylating reagent such as an aliphatic acid anhydride or acid chloride. The corresponding aryl and heteroaryl acid anhydrides and acid chlorides can also be used. Such reactions are generally carried out using an amine catalyst such as pyridine in an inert solvent. Similarly, carbamic acid esters (urethanes) can be obtained by reacting a hydroxyl group with isocyanates and carbamoyl chlorides. Sulfonate, phosphonate, and phosphate esters can be prepared using the corresponding acid chloride and similar reagents. Compounds of Formula (I) that have at least one thiol group present can be converted to the corresponding thioesters derivatives analogous to those of alcohols and phenols using the same reagents and comparable reaction conditions. Compounds of Formula (I) that have at least one primary or secondary amine group present can be converted to the corresponding amide derivatives. Amides of carboxylic acids can be prepared using the appropriate acid chloride or anhydrides with reaction conditions analogous to those used with alcohols and phenols. Ureas of the corresponding primary or secondary amine can be prepared using isocyanates directly and carbamoyl chlorides in the presence of an acid scavenger such as triethylamine or pyridine. Sulfonamides can be prepared from the corresponding sulfonyl chloride in the presence of aqueous sodium hydroxide. Suitable procedures and methods for preparing these derivatives can be found in House's Modern Synthetic Reactions, W. A. Benjamin, Inc., Shriner, Fuson, and Curtin in The Systematic Identification of Organic Compounds, 5th Edition, John Wiley & Sons, and Fieser and Fieser in Reagents for Organic Synthesis, Volume 1, John Wiley & Sons. Reagents of a wide variety that can be used to derivatize hydroxyl, thiol, and amines of compounds of Formula (I) are available from commercial sources or the references cited above, which are incorporated herein by reference.

Formula (I) compounds of this invention possessing hydroxyl, thiol, and amine functional groups can be alkylated to a wide variety derivatives. A hydroxyl group of compounds of Formula (I) can be readily converted to ethers. Alkylation to form an ether is readily effected using a suitable alkylating reagent such as an alkyl bromide, alkyl iodide or alkyl sulfonate. The corresponding aralkyl, heteroaralkyl, alkoxyalkyl, aralkyloxyalkyl, and heteroaralkyloxyalkyl bromides, iodides, and sulfonates can also be used. Such reactions are generally carried out using an alkoxide forming reagent such as sodium hydride, potassium t-butoxide, sodium amide, lithium amide, and n-butyl lithium using an inert polar solvent such as DMF, DMSO, THF, and similar, comparable solvents. amine catalyst such as pyridine in an inert solvent. Compounds of Formula (I) that have at least one thiol group present can be converted to the corresponding thioether derivatives analogous to those of alcohols and phenols using the same reagents and comparable reaction conditions. Compounds of Formula (I) that have at least one primary, secondary or tertiary amine group present can be converted to the corresponding quaternary ammonium derivatives. Quaternary ammonium derivatives can be prepared using the appropriate bromides, iodides, and sulfonates analogous to those used with alcohols and phenols. Conditions involve reaction of the amine by warming it with the alkylating reagent with a stoichiometric amount of the amine (i.e., one equivalent with a tertiary amine, two with a secondary, and three with a primary). With primary and secondary amines, two and one equivalents, respectively, of an acid scavenger are used concurrently. Tertiary amines can be prepared from the corresponding primary or secondary amine by reductive alkylation with aldehydes and ketones using reduction methods. Suitable procedures and methods for preparing these derivatives can be found in House's Modern Synthetic Reactions, W. A. Benjamin, Inc., Shriner, Fuson, and Curtin in The Systematic Identification of Organic Compounds, 5th Edition, John Wiley & Sons, and Fieser and Fieser in Reagents for Organic Synthesis, Volume 1, John Wiley & Sons. Perfluoroalkyl derivatives can be prepared as described by DesMarteau in J. Chem. Soc. Chem. Commun. 2241 (1998). Reagents of a wide variety that can be used to derivatize hydroxyl, thiol, and amines of compounds of Formula (I) are available from commercial sources or the references cited above, which are incorporated herein by reference.

The biological activity, of the compounds of Example 1 and Schemes 1, 2, 3, and 4 is evaluated using bioassay procedures below.

Assays for Biological Activity TF-VIIa Assay

In this assay 100 nM recombinant soluble tissue factor and 2 nM recombinant human factor VIIa are added to a 96-well assay plate containing 0.4 mM of the substrate, N-Methylsulfonyl-D-phe-gly-arg-p-nitroaniline and either inhibitor or buffer (5 mM CaCl₂, 50 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.1% BSA). The reaction, in a final volume of 100 ul is measured immediately at 405 nm to determine background absorbance. The plate is incubated at room temperature for 60 min, at which time the rate of hydrolysis of the substrate is measured by monitoring the reaction at 405 nm for the release of p-nitroaniline. Percent inhibition of TF-VIIa activity is calculated from OD_(405nm) value from the experimental and control sample.

Xa Assay

0.3 nM human factor Xa and 0.15 mM N-α-Benzyloxycarbonyl-D-arginyl-L-glycyl-L-arginine-p-nitroaniline-dihydrochloride (S-2765) are added to a 96-well assay plate containing either inhibitor or buffer (50 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.1% BSA). The reaction, in a final volume of 100 ul is measured immediately at 405 nm to determine background absorbance. The plate is incubated at room temperature for 60 min, at which time the rate of hydrolysis of the substrate is measured by monitoring the reaction at 405 nm for the release of p-nitroaniline. Percent inhibition of Xa activity is calculated from OD_(405nm) value from the experimental and control sample.

Thrombin Assay

0.28 nM human thrombin and 0.06 mM H-D-Phenylalanyl-L-pipecolyl-L-arginine-p-nitroaniline dihydrochloride are added to a 96-well assay plate containing either inhibitor or buffer (50 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.1% BSA). The reaction, in a final volume of 100 ul is measured immediately at 405 nm to determine background absorbance. The plate is incubated at room temperature for 60 min, at which time the rate of hydrolysis of the substrate is measured by monitoring the reaction at 405 nm for the release of p-nitroaniline. Percent inhibition of thrombin activity is calculated from OD_(405nm) value from the experimental and control sample.

Trypsin Assay

5 ug/ml trypsin, type 1× from porcine pancreas and 0.375 mM N-α-Benzoyl-L-arginine-p-nitroanilide (L-BAPNA) are added to a 96-well assay plate containing either inhibitor or buffer (50 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.1% BSA). The reactions, in a final volume of 100 ul are measured immediately at 405 nm to determine background absorbance. The plate is incubated at room temperature for 60 min, at which time the rate of hydrolysis of the substrate is measured by monitoring the reaction at 405 nm for the release of p-nitroaniline. Percent inhibition of trypsin activity is calculated from OD₄₀5 nm value from the experimental and control sample.

Recombinant soluble TF, consisting of amino acids 1-219 of the mature protein sequence was expressed in E. coli and purified using a Mono Q Sepharose FPLC. Recombinant human VIIa was purchased from American Diagnostica, Greenwich Conn. and chromogenic substrate N-Methylsulfonyl-D-phe-gly-arg-p-nitroaniline was prepared by American Peptide Company, Inc., Sunnyvale, Calif. Factor Xa was obtained from Enzyme Research Laboratories, South Bend Ind., thrombin from Calbiochem, La Jolla, Calif., and trypsin and L-BAPNA from Sigma, St. Louis Mo. The chromogenic substrates S-2765 and S-2238 were purchased from Chromogenix, Sweden. 

1. A compound of the Formula:

or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of: (i) phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³², (b) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³⁶, (c) a ring carbon or nitrogen in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³², is optionally substituted by R³³, (d) a ring carbon or nitrogen in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³⁶, is optionally substituted by R³⁵, and (e) a ring carbon or nitrogen, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R³³ and R³⁵, respectively, is optionally substituted by R³⁴; (ii) hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶; and (iii) C3-C12 cycloalkyl or C4-C9 saturated heterocyclyl, wherein (a) each ring carbon may be optionally substituted with R₃₃, (b) a ring carbon, other than the ring carbon at the point of attachment of B to A, may be optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, (c) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (d) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (e) a ring carbon or nitrogen atom, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (f) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², (g) a ring carbon or nitrogen, if present, in a first gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹⁰, is optionally substituted by R¹¹, (h) a ring carbon or nitrogen, if present, in a second gamma position relative to the carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹², is optionally substituted by R³³, and (i) a ring carbon or nitrogen, if present, in a delta position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹¹ and R³³, respectively, is optionally substituted by R³⁴; R⁹, R¹⁰, R¹¹, R¹², R¹³, R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, alkoxyalkyl, haloalkoxylalkyl, hydroxy, amino, alkoxyamino, nitro, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylthio, alkylthioalkyl, alkylsulfinyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, alkylsulfonylalkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkylsulfonamido, amidosulfonyl, alkanoyl, haloalkanoyl, alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyalkyl, aminoalkyl, haloalkoxyalkyl, carboxyalkyl, carboalkoxy, carboxy, carboxamido, carboxamidoalkyl, and cyano; and R³², R³³, R³⁴, R³⁵, and R³⁶ are independently optionally Q^(b); A is selected from the group consisting of a bond, (W⁷)_(rr)-(CH(R¹⁵))_(pa), and (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa is an integer selected from 0 through 6, and W⁷ is selected from the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and N(R⁷) with the proviso that no more than one of the group consisting of rr and pa is 0 at the same time; R⁷ is selected from the group consisting of hydrido, hydroxy, and alkyl; R¹⁵ is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl; Ψ is NH or NOH; X⁰ is selected from the group consisting of hydrido, alkyl, alkenyl, cyano, halo, haloalkyl, haloalkoxy, haloalkylthio, amino, aminoalkyl, alkylamino, amidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, and alkylthio; R² is Z⁰-Q; Z⁰ is selected from the group consisting of: (i) a bond, (CR⁴¹R⁴²)_(q) wherein q is an integer selected from 1 through 3, and (CH(R⁴¹))_(g)—W⁰—(CH(R⁴²))_(p) wherein g and p are integers independently selected from through 3 and W⁰ is selected from the group consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹); and (ii) (CH(R⁴¹))_(e)—W²²—(CH(R⁴²))_(h) wherein e and h are independently 0 or 1 and W²² is selected from the group consisting of CR⁴¹═CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, wherein Z⁰ is directly bonded to the 4-pyrone ring and W²² is optionally substituted with one or more substituents selected from the group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³; R⁴¹ and R⁴² are independently selected from the group consisting of amidino, hydroxyamino, hydrido, hydroxy, amino, and alkyl; Q is selected from the group consisting of: (i) phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon or nitrogen in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon or nitrogen in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon or nitrogen, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; and (ii) hydrido with the proviso that Z⁰ is selected from other than a bond; K is selected from the group consisting of: (i) CR^(4a)R^(4b); and (ii) (CH(R¹⁴))_(j)-T wherein j is 0 or 1 and T is a bond or N(R⁷) with the proviso that (CH(R¹⁴))_(j) is bonded to the phenyl ring; R^(4a) and R^(4b) are independently selected from the group consisting of halo, hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl; E⁰ is selected from the group consisting of: (i) E¹, with the proviso that K is CR^(4a)R^(4b), wherein E¹ is selected from the group consisting of a covalent single bond, C(O)N(H), (H)NC(O), C(S)N(H), (H)NC(S), S(O)₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and C(O)N(H)S(O)₂; and (ii) E², with the proviso that K is (CH(R¹⁴))_(j)-T, wherein E² is selected from the group consisting of C(O)N(H), (H)NC(O), C(S)N(H), (H)NC(S), S(O)₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and C(O)N(H)S(O)₂; R¹⁴ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; Y⁰ is selected from the group consisting of: (i) the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; (ii) Y^(AT) wherein Y^(AT) is Q^(b)-Q^(s); (iii) Q^(b)-Q^(ss), wherein Q_(ss) is (CH(R¹⁴))_(e)—W²—(CH(R¹⁵))_(h), wherein e and h are independently 1 or 2 and W² is CR^(4a)═CR^(4b), with the proviso that (CH(R¹⁴))_(e) is bonded to E⁰; and (iv) Q^(b)-Q^(ssss) or Q^(b)-Q^(ssssr) wherein Q^(ssss) is (CH(R³⁸))_(r)—W⁵, Q^(ssssr) is (CH(R³⁸))_(r)—W⁶, r is 1 or 2, W⁵ and W⁶ are independently selected from the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl, 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl, 2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl, 3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl, 3,7-benzothiophenyl, 2,7-imidazo(1,2-a)pyridinyl, 3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl, 3,6-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl, 2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl, 1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl, 3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl, 4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl, 4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each carbon and hyrido containing nitrogen member of the ring of the W⁵ and of the ring of the W⁶, other than the points of attachment of W⁵ and W⁶, is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the proviso that Q^(b) is bonded to lowest number substituent position of each W⁵, with the further proviso that Q^(b) is bonded to highest number substituent position of each W⁶, and with the additional proviso that (CH(R³⁸))_(r) is bonded to E⁰; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, nitro, alkoxyamino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, alkenyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, haloalkoxyalkyl, carboalkoxy, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, aminoalkyl, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso that no more than one of R²⁰ and R²¹ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time, with the further proviso that no more than one of R²³ and R²⁴ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, aminoalkyl, amino, dialkylamino, alkylamino, and hydroxyalkyl; Q^(s) is selected from the group consisting of a bond, (CR³⁷R³⁸)_(b) wherein b is an integer selected from 1 through 4, and (CH(R¹⁴))_(c)—W¹—(CH(R¹⁵))_(d) wherein c and d are integers independently selected from 1 through 3 and W¹ is selected from the group consisting of C(O)N(R¹⁴), (R¹⁴)NC(O), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, and N(R¹⁴), with the proviso that R¹⁴ is selected from other than halo when directly bonded to N, and with the additional proviso that (CR³⁷R³⁸)_(b) and (CH(R¹⁴))_(c) are bonded to E⁰; R³⁷ and R³⁸ are independently selected from the group consisting of hydrido, alkyl, and haloalkyl; and R³⁸ is optionally aroyl or heteroaroyl, wherein R³⁸ is optionally substituted with one or more substituents selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹.
 2. Compound of claim 1 of the formula:

or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of: (i) phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³², (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³⁶, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³², is optionally substituted by R³³, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³⁶, is optionally substituted by R³⁵, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R³³ and R³⁵, respectively, is optionally substituted by R³⁴; (ii) hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶; and (iii) C3-C12 cycloalkyl or a C4-C9 saturated heterocyclyl, wherein (a) each ring carbon may be optionally substituted with R₃₃, (b) a ring carbon, other than the ring carbon at the point of attachment of B to A, may be optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, (c) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (d) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (e) a ring carbon or nitrogen atom, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (f) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², (g) a ring carbon or nitrogen, if present, in a first gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹⁰, is optionally substituted by R¹¹, (h) a ring carbon or nitrogen, if present, in a second gamma position relative to the carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹², is optionally substituted by R³³, and (i) a ring carbon or nitrogen, if present, in a delta position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹¹ and R³³, respectively, is optionally substituted by R³⁴; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy, hydroxy, amino, alkoxyamino, haloalkanoyl, nitro, alkylamino, alkylthio, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkylsulfonamido, amidosulfonyl, alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q_(b); R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, alkoxyamino, alkanoyl, haloalkanoyl, amidino, guanidino, alkylenedioxy, haloalkylthio, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylthio, alkylsulfinyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, alkylsulfamido, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, amidosulfonyl, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, and cyano; A is bond or (CH(R⁵))_(pa)-(W⁷), wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is selected from the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and N(R⁷), with the proviso that W⁷ is bonded to the N(H) on the 4-pyrone ring; R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl; R¹⁵ is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, alkyl, cyano, halo, haloalkyl, haloalkoxy, amino, aminoalkyl, alkylamino, amidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, and alkylthio; R² is Z⁰-Q; Z⁰ is selected from the group consisting of: (i) a bond, (CR⁴¹R⁴²)_(q) wherein q is 1 or 2, and (CH(R⁴¹))_(g)—W⁰—(CH(R⁴²))_(p) wherein g and p are integers independently selected from 0 through 3 and W⁰ is selected from the group consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹); and (ii) (CH(R⁴¹))_(e)—W²²—(CH(R⁴²))_(h) wherein e and h are independently 0 or 1 and W²² is selected from the group consisting of CR⁴¹═CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, wherein Z⁰ is directly bonded to the 4-pyrone ring and W²² is optionally substituted with one or more substituents selected from the group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³; R⁴¹ and R⁴² are independently selected from the group consisting of hydrido, hydroxy, alkyl, and amino; Q is selected from the group consisting of: (i) phenyl or a heteroaryl of 5 or 6 ring members, wherein wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; and (ii) hydrido with the proviso that Z⁰ is other than a bond; K is selected from the group consisting of: (i) CR^(4a)R^(4b); and (ii) (CH(R¹⁴))_(j)-T wherein j is 0 or 1 and T is a bond or N(R⁷) with the proviso that (CH(R¹⁴))_(j) is bonded to the phenyl ring; R^(4a) and R^(4b) are independently selected from the group consisting of hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl; E⁰ is selected from the group consisting of: (i) E¹, with the proviso that K is CR^(4a)R^(4b), wherein E¹ is selected from the group consisting of a covalent single bond, C(O)N(H), (H)NC(O), S(O)₂N(H), and N(H)S(O)₂; and (ii) E², with the proviso that K is (CH(R¹⁴))_(j)-T, wherein E² is selected from the group consisting of C(O)N(H), (H)NC(O), C(S)N(H), (H)NC(S), S(O)₂N(H), N(H)S(O)₂, S(O)₂N(H)C(O), and C(O)N(H)S(O)₂; R¹⁴ is hydrido or halo; Y⁰ is selected from the group consisting of: (i) the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; and (ii) Y^(AT) wherein Y^(AT) is Q^(b)-Q^(s); and (iii) Q^(b)-Q^(ss) wherein Q_(ss) is (CH(R¹⁴))_(e)—W²—(CH(R¹⁵))_(h), wherein e and h are independently 1 or 2 and W² is CR^(4a)═CR^(4b) with the proviso that (CH(R¹⁴))_(e) is bonded to E⁰; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso that no more than one of R²⁰ and R²¹ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time, with the further proviso that no more than one of R²³ and R²⁴ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, amino, alkylamino and dialkylamino; Q^(s) is selected from the group consisting of a bond, (CR³⁷R³⁸)_(b) wherein b is an integer selected from 1 through 4, and (CH(R¹⁴))_(c)—W¹—(CH(R¹⁵))_(d) wherein c and d are integers independently selected from 1 through 3 and W¹ is selected from the group consisting of C(O)N(R¹⁴), (R¹⁴)NC(O), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, and N(R¹⁴), with the proviso that R¹⁴ is selected from other than halo when directly bonded to N, and with the additional proviso that (CR³⁷R³⁸)_(b) and (CR³⁷R³⁸)_(b), and (CH(R¹⁴))_(c) are bonded to E⁰; R³⁷ and R³⁸ are independently selected from the group consisting of hydrido, alkyl, and haloalkyl; and R³⁸ is optionally aroyl or heteroaroyl, wherein R³⁸ is optionally substituted with one or more substituents selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹.
 3. Compound of claim 2 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^(b); A is (CH(R¹⁵))_(pa)—W⁷ wherein pa is an integer selected from 0 through 3 and W⁷ is selected from the group consisting of O, S, and N(R⁷) wherein R⁷ is hydrido or alkyl; R¹⁵ is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, amino, alkyl, cyano, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy, hydroxyalkyl, and alkylthio; R² is Z⁰-Q; Z⁰ is a bond or (CR⁴¹R⁴²)_(q) wherein q is 1 or 2; R⁴¹ and R⁴² are independently selected from the group consisting of hydrido, hydroxy, and amino; Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, alkoxyamino, alkanoyl, haloalkanoyl, amidino, guanidino, alkylenedioxy, haloalkylthio, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylthio, alkylsulfinyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, alkylsulfamido, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, amidosulfonyl, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, and cyano; K is CHR^(4a) wherein R^(4a) is selected from the group consisting of hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl; E⁰ is selected from the group consisting of a bond, C(O)N(H), (H)NC(O), (R⁷)NS(O)₂, and S(O)₂N(R⁷); Y⁰ is selected from the group consisting of: (i) the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; and (ii) Q^(b)-Q^(ss) wherein Q^(ss) is (CH(R¹⁴))_(e)—W²—(CH(R¹⁵))_(h), wherein e and h are integers independently selected from 1 through 2 and W² is CR^(4a)═CH with the proviso that (CH(R¹⁴))_(e) is bonded to E⁰; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkoxyamino, lower alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso that no more than one of R²⁰ and R²¹ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino and with the further proviso that no more than one of R²³ and R²⁴ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, amino, alkylamino and dialkylamino; Q^(s) is selected from the group consisting of a bond, (CR³⁷R³⁸)_(b) wherein b is an integer selected from 1 through 3, and (CH(R¹⁴))_(c)—W¹—(CH(R¹⁵))_(d) wherein c and d are independently 1 or 2 and W¹ is selected from the group consisting of C(O)N(R¹⁴), (R¹⁴)NC(O), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, and N(R¹⁴), with the proviso that R¹⁴ is selected from other than halo when directly bonded to N and with the further proviso that (CR³⁷R³⁸)_(b), and (CH(R¹⁴))_(c) are bonded to E⁰; R¹⁴ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; R³⁷ is selected from the group consisting of hydrido, alkyl, and haloalkyl; and R³⁸ is selected from the group consisting of hydrido, alkyl, haloalkyl, aroyl and heteroaroyl.
 4. Compound of claim 3 of the Formula:

or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, trialkylsilyl, C2-C4 alkyl, C3-C5 alkylenyl, C3-C4 alkenyl, C3-C4 alkynyl, and C2-C4 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 3 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, and R³⁴; R³², R³³, and R³⁴ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, and cyano; A is (CH(R¹⁵))_(pa)—N(R⁷) wherein pa is an integer selected from 0 through 2 and R⁷ is hydrido or alkyl; R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, amino, alkyl, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy, hydroxyalkyl, and alkylthio; R² is Z⁰-Q; Z⁰ is a bond or CH₂; Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy, carboxamido, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido, amidosulfonyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano; Y⁰ is the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, C(N²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the proviso that no more than one of R²⁰ and R²¹ is hydroxy at the same time and with the further proviso that no more than one of R²³ and R²⁴ is hydroxy at the same time; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, and hydroxy; and Q^(s) is selected from the group consisting of a bond, CH₂, and CH₂CH₂.
 5. Compound of claim 4 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, —CH₂CH₂CH₂—, —CH₂CH₂CH₂CH₂—, butyl, 2-butenyl, 3-butenyl, 2-butynyl, sec-butyl, tert-butyl, isobutyl, 2-methylpropenyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, and 2,2-difluoropropyl, wherein each member of group B is optionally substituted at any carbon up to and including 3 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, and R³⁴; R³², R³³, and R³⁴ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; A is selected from the group consisting of a bond, NH, and N(CH₃); X⁰ is selected from the group consisting of hydrido, hydroxy, amino, aminomethyl, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methylthio, ethylthio, trifluoromethoxy,1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo; R² is Z⁰-Q; Z⁰ is a bond or CH₂; Q is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-isopropylamidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, fluoro, chloro, bromo, cyano, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; Y⁰ is selected from the group consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, and cyano; R¹⁶ or R¹⁹ is optionally selected from the group consisting of NR²—OR²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^(b) are not simultaneously hydrido; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the proviso that no more than one of R²⁰, R²¹, R²³, and R²⁴ can be hydroxy, when any two of the group consisting of R²⁰, R²¹, R²³, and R²⁴ are bonded to the same atom and with the further proviso that said Q^(b) group is bonded directly to a carbon atom; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, methyl, ethyl, propyl, butyl, isopropyl, and hydroxy; Q^(s) is selected from the group consisting of a bond, CH₂, and CH₂CH₂.
 6. Compound of claim 4, or a pharmaceutically acceptable salt thereof, wherein; A is selected from the group consisting of CH₂N(CH₃), CH₂N(CH₂CH₃), CH₂CH₂N(CH₃), and CH₂CH₂N(CH₂CH₃); X^(O) is selected from the group consisting of hydrido, hydroxy, amino, aminomethyl, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methylthio, ethylthio, trifluoromethoxy,1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo; R² is Z⁰-Q; Z⁰ is a bond or CH₂; Q is selected from the group consisting of phenyl, 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl, wherein a carbon adjacent to the carbon at the point of attachment of said phenyl or heteroaryl ring to Z⁰ is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-isopropylamidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, fluoro, chloro, bromo, cyano, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; Y⁰ is selected from the group consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, amidino, guanidino, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the proviso that no more than one of R²⁰, R²¹, R²³, and R²⁴ can be hydroxy, when any two of the group consisting of R²⁰, R²¹, R²³, and R²⁴ are bonded to the same atom, and with the further proviso that said Q^(b) group is bonded directly to a carbon atom; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, methyl, ethyl, propyl, butyl, isopropyl, and hydroxy; and Q^(s) is selected from the group consisting of a bond, CH₂, and CH₂CH₂.
 7. Compound of claim 6 or a pharmaceutically acceptable salt thereof, wherein; A is selected from the group consisting of CH₂N(CH₃), CH₂N(CH₂CH₃), CH₂CH₂N(CH₃), and CH₂CH₂N(CH₂CH₃); X^(o) is selected from the group consisting of hydrido, hydroxy, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, fluoro, chloro, and bromo; R² is Z⁰-Q; Z⁰ is a bond or CH₂; Q is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-amino-5-carboxyphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y⁰ is selected from the group consisting of:

R¹⁶ and R¹⁹ are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R¹⁷ and R¹⁸ are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Q^(b) is C(NR²⁵)NR²³R²⁴; R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido and methyl; and Q^(s) is CH₂.
 8. A compound as recited in claim 7 or a pharmaceutically acceptable salt thereof where said compound is selected from the group consisting of: 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-aminophenyl]-5-[N,N-dimethylhydrazino]-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-aminophenyl]-5-[N-ethyl-N-methylhydrazino]-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-aminophenyl]-5-[N,N-dimethylhydrazino]-6-chloro-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-aminophenyl]-5-[N-ethyl-N-methylhydrazino]-6-chloro-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3,5-diaminophenyl]-5-[N,N-dimethylhydrazino]-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3,5-diaminophenyl]-5-[N-ethyl-N-methylhydrazino]-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3,5-diaminophenyl]-5-[N,N-dimethylhydrazino]-6-chloro-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3,5-diaminophenyl]-5-[N-ethyl-N-methylhydrazino]-6-chloro-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-amino-5-carboxyphenyl]-5-[N,N-dimethylhydrazino]-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-amino-5-carboxyphenyl]-5-[N-ethyl-N-methylhydrazino]-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-amino-5-carboxyphenyl]-5-[N,N-dimethylhydrazino]-6-chloro-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-amino-5-carboxyphenyl]-5-[N-ethyl-N-methylhydrazino]-6-chloro-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-[N,N-dimethylhydrazino]-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-[N-ethyl-N-methylhydrazino]-4-pyronyl]]acetamide; 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2-[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-[N,N-dimethylhydrazino]-6-chloro-4-pyronyl]]acetamide; and 2-[3-[N-[[4-aminoiminomethylphenyl]methyl]-2[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-[N-ethyl-N-methylhydrazino]-6-chloro-4-pyronyl]]acetamide.
 9. Compound of claim 2 of the formula:

or a pharmaceutically acceptable salt thereof, wherein; B is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³², (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³⁶, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³², is optionally substituted by R³³, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³⁶, is optionally substituted by R³⁵, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R³³ and R³⁵, respectively, is optionally substituted by R³⁴; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^(b); A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is (R⁷)NC(O) or N(R⁷); R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl; R⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, amino, alkyl, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy, hydroxyalkyl, and alkylthio; R² is Z⁰-Q; Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂, W⁰—(CH(R⁴²))_(p) wherein p is 0 or 1 and W⁰ is selected from the group consisting of O, S, and N(R⁴¹); R⁴¹ and R⁴² are independently hydrido or alkyl; Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy, carboxamido, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido, amidosulfonyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano; Y⁰ is the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, and C(NR²⁵)NR²³R²⁴, with the proviso that no more than one of R²⁰ and R²¹ is hydroxy and with the further proviso that no more than one of R²³ and R²⁴ is hydroxy; R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, alkyl, and hydroxy; and Q^(s) is selected from the group consisting of a bond, CH₂, and CH₂CH₂.
 10. Compound of claim 9 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³², (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³⁶, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³², is optionally substituted by R³³, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³⁶, is optionally substituted by R³⁵, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R³³ and R³⁵, respectively, is optionally substituted by R³⁴; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and Q^(b); A is selected from the group consisting of a bond, NH, N(CH₃), N(OH), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O), C(O)NH, C(O)N(CH₃), CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, and CF₃CHCH₂; X⁰ is selected from the group consisting of hydrido, hydroxy, amino, aminomethyl, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methylthio, ethylthio, trifluoromethoxy,1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo; R² is Z⁰-Q; Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂, O, S, NH, N(CH₃), OCH₂, SCH₂, N(H)CH₂, and N(CH₃)CH₂; Q is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, fluoro, chloro, bromo, cyano, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; Y⁰ is selected from the group consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, and cyano; Q^(b) is C(NR²⁵)NR²³R²⁴ or hydrido, with the proviso that no more than one of R²³ and R²⁴ is hydroxy at the same time; R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, methyl, ethyl, and hydroxy; and Q^(s) is selected from the group consisting of a bond, CH₂ and CH₂CH₂.
 11. Compound of claim 10 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of 2-aminophenyl, 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 3-fluorophenyl, 3,4-difluorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyaminophenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoromethylphenyl, 2-imidazoyl, 2-pyridyl, 3-pyridyl, 5-chloro-3-trifluoromethyl-2-pyridyl, 4-pyridyl, 2-thienyl, 3-thienyl, and 3-trifluoromethyl-2-pyridyl; A is selected from the group consisting of CH₂, CH₃CH, CF₃CH, NHC(O), CH₂CH₂, and CH₂CH₂CH₂; X⁰ is selected from the group consisting of hydrido, hydroxy, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, fluoro, chloro, and bromo; R² is Z⁰-Q; Z⁰ is selected from the group consisting of a bond, CH₂, O, S, NH, N(CH₃), OCH₂, and SCH₂; Q is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-amino-5-carboxyphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y⁰ is selected from the group consisting of:

R¹⁶ and R¹⁹ are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R¹⁷ and R¹⁸ are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Q^(b) is C(NR²⁵)NR²³R²⁴ or hydrido; R²³, R²⁴, and R²⁵ are independently hydrido or methyl; and Q^(b) is CH₂.
 12. Compound of claim 9, or a pharmaceutically acceptable salt thereof, wherein; B is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³², (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³⁶, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³², is optionally substituted by R³³, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³⁶, is optionally substituted by R³⁵, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R³³ and R³⁵, respectively, is optionally substituted by R³⁴; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^(b); A is a bond or (CH(R⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is N(R⁷); R⁷ is hydrido or alkyl; R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, alkyl, halo, haloalkyl, aminoalkyl, and hydroxyalkyl; R² is Z⁰-Q; Z⁰ is a bond; Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkoxy, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboxy, carboxamido, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, alkoxy, alkoxyamino, hydroxy, amino, alkylamino, alkylsulfonamido, amidosulfonyl, hydroxyalkyl, aminoalkyl, halo, haloalkyl, carboalkoxy, carboxy, carboxamido, carboxyalkyl, and cyano; Y⁰ is the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, and C(NR²⁵)NR²³R²⁴; R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently hydrido or alkyl; and Q^(s) is CH₂.
 13. Compound of claim 12 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, and 5-isoxazolyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³², (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³⁶, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³², is optionally substituted by R³³, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³⁶, is optionally substituted by R³⁵, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R³³ and R³⁵, respectively, is optionally substituted by R³⁴; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, carboxy, cyano, and Q^(b); A is selected from the group consisting of a bond, NH, N(CH₃), CH₂, CH₃CH, and CH₂CH₂; X^(o) is selected from the group consisting of hydrido, aminomethyl, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 2-hydroxyethyl, chloro, and fluoro; R² is selected from the group consisting of phenyl and 2-thienyl, 2-furyl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl, 2-pyridyl, and 3-pyridyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, methylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, amidocarbonyl, N-methylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, carboxy, carboxymethyl, amino, acetamido, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoroacetamido, aminomethyl, N-methylamino, dimethylamino, methoxyamino, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, methanesulfonamido, methoxycarbonyl, fluoro, chloro, bromo, and cyano; Y⁰ is selected from the group consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, amidino, guanidino, methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, methylthio, ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and cyano; Q^(b) is NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴; R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, methyl, and ethyl; and Q^(s) is CH₂.
 14. Compound of claim 13 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of 2-aminophenyl, 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 3-fluorophenyl, 3,4-difluorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyaminophenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoromethylphenyl, 2-imidazoyl, 2-pyridyl, 3-pyridyl, 5-chloro-3-trifluoromethyl-2-pyridyl, 4-pyridyl, 2-thienyl, 3-thienyl, and 3-trifluoromethyl-2-pyridyl; A is CH₂ or CH₂CH₂; X^(o) is selected from the group consisting of hydrido, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 2-hydroxyethyl, chloro, and fluoro; R² is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-carboxyphenyl, 3-carboxy-5-aminophenyl, 3-carboxy-5-hydroxyphenyl, 3-carboxymethyl-5-aminophenyl, 3-carboxymethyl-5-hydroxyphenyl, 3-carboxymethylphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2,5-difluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y⁰ is selected from the group consisting of:

R¹⁶ and R¹⁹ are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R¹⁷ and R¹⁸ are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Q^(b) is C(NR²⁵)NR²³R²⁴; R²³, R²⁴, and R²⁵ are independently hydrido or methyl; and Q^(s) is CH₂.
 15. Compound of claim 14 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 4-methylphenyl, phenyl, 2-imidazoyl, 3-pyridyl, 4-pyridyl, and 3-trifluoromethyl-2-pyridyl; A is CH₂ or CH₂CH₂; X^(o) is selected from the group consisting of hydrido, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, chloro, and fluoro; R² is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 3-aminophenyl, 3-carboxy-5-aminophenyl, 3-chlorophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-bromo-2-thienyl, 2-thienyl, and 3-thienyl; and Y⁰ is selected from the group consisting of 5-amidino-2-thienylmethyl, 4-amidinobenzyl, 2-fluoro-4-amidinobenzyl, and 3-fluoro-4-amdinobenzyl.
 16. Compound of claim 9, or a pharmaceutically acceptable salt thereof, wherein: R² is 3-aminophenyl, B is phenyl, A is CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is hydrido; R² is 3-aminophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3-aminophenyl, B is phenyl, A is CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3-aminophenyl, B is 2-imidazoyl, A is CH₂CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3-amidocarbonyl-5-aminophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3,5-diaminophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3-amino-5-carboxyphenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is methyl; R² is 3-amidocarbonyl-5-aminophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is hydrido; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is hydrido; R² is 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is hydrido; R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is hydrido; R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X⁰ is hydrido; R² is 3,5-diaminophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X^(o) is hydrido; or R² is 3-amino-5-carboxyphenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X^(o) is hydrido.
 17. Compound of claim 2 of the Formula:

or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, C2-C8 alkyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^(b); A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is (R⁷)NC(O) or N(R⁷); R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl; R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, amino, alkyl, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy, hydroxyalkyl, and alkylthio; R² is Z⁰-Q; Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂, W⁰—(CH(R⁴²))_(p) wherein p is 0 or 1 and W⁰ is selected from the group consisting of O, S, and N(R⁴¹); R⁴¹ and R⁴² are independently hydrido or alkyl; Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy, carboxamido, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido, amidosulfonyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano; Y⁰ is the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the proviso that no more than one of R²⁰ and R²¹ is hydroxy and with the further proviso that no more than one of R²³ and R²⁴ is hydroxy; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, and hydroxy; and Q^(s) is selected from the group consisting of a bond, CH₂, and CH₂CH₂.
 18. Compound of claim 17 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, ethyl, 2-propynyl, 2-propenyl, propyl, isopropyl, butyl, 2-butenyl, 3-butenyl, 2-butynyl, sec-butyl, tert-butyl, isobutyl, 2-methylpropenyl, 1-pentyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-pentynyl, 3-pentynyl, 2-pentyl, 1-methyl-2-butenyl, 1-methyl-3-butenyl, 1-methyl-2-butynyl, 3-pentyl, 1-ethyl-2-propenyl, 2-methylbutyl, 2-methyl-2-butenyl, 2-methyl-3-butenyl, 2-methyl-3-butynyl, 3-methylbutyl, 3-methyl-2-butenyl, 3-methyl-3-butenyl, 1-hexyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 2-hexyl, 1-methyl-2-pentenyl, 1-methyl-3-pentenyl, 1-methyl-4-pentenyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl, 3-hexyl, 1-ethyl-2-butenyl, 1-ethyl-3-butenyl, 1-propyl-2-propenyl, 1-ethyl-2-butynyl, 1-heptyl, 2-heptenyl, 3-heptenyl, 4-heptenyl, 5-heptenyl, 6-heptenyl, 2-heptynyl, 3-heptynyl, 4-heptynyl, 5-heptynyl, 2-heptyl, 1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methyl-4-hexenyl, 1-methyl-5-hexenyl, 1-methyl-2-hexynyl, 1-methyl-3-hexynyl, 1-methyl-4-hexynyl, 3-heptyl, 1-ethyl-2-pentenyl, 1-ethyl-3-pentenyl, 1-ethyl-4-pentenyl, 1-butyl-2-propenyl, 1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 2,2,2-trifluoroethyl, 2,2-difluoropropyl, 4-trifluoromethyl-5,5,5-trifluoropentyl, 4-trifluoromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and 3,3,3-trifluoropropyl, wherein each member of group B is optionally substituted at any carbon up to and including 5 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and Q^(b); A is selected from the group consisting of bond, NH, N(CH₃), N(OH), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O), C(O)NH, C(O)N(CH₃), CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, and CF₃CHCH₂; X⁰ is selected from the group consisting of hydrido, hydroxy, amino, aminomethyl, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methylthio, ethylthio, trifluoromethoxy,1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo; R² is Z⁰-Q; Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂, O, S, NH, N(CH₃), OCH₂, SCH₂, N(H)CH₂, and N(CH₃)CH₂; Q is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, fluoro, chloro, bromo, cyano, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; Y⁰ is selected from the group consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the proviso that no more than one of R²⁰ and R²¹ is hydroxy and with the further proviso that no more than one of R²³ and R²⁴ is hydroxy; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, methyl, ethyl, propyl, butyl, isopropyl, and hydroxy; and Q^(s) is selected from the group consisting of a bond, CH₂, and CH₂CH₂.
 19. Compound of claim 18 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butyl, (R)-2-butyl, (S)-2-butyl, tert-butyl, isobutyl, 1-pentyl, 3-pentyl, 2-methylbutyl, 2,2,2-trifluoroethyl, 6-amidocarbonylhexyl, 4-methyl-2-pentyl, 3-hydroxypropyl, 1-methoxy-2-propyl, 2-methoxyethyl, 2-methyl-2-butyl, 3-methyl-2-butyl, 2-dimethylaminopropyl, 2-cyanoethyl, 6-hydroxyhexyl, 2-hydroxyethyl, 2-amidinoethyl, 2-guanidinoethyl, 3-guanidinopropyl, 4-guanidinobutyl, 3-hydroxypropyl, 4-hydroxybutyl, 6-cyanohexyl, 2-dimethylaminoethyl, 3-methylbutyl, 2-methylbutyl, (S)-2-methylbutyl, 3-aminopropyl, 2-hexyl, and 4-aminobutyl; A is selected from the group consisting of a bond, CH₂, NHC(O), CH₂CH₂, CH₂CH₂CH₂, and CH₃CHCH₂; X^(o) is selected from the group consisting of hydrido, hydroxy, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, fluoro, chloro, and bromo; R² is Z⁰-Q; Z⁰ is selected from the group consisting of a bond, CH₂, O, S, NH, N(CH₃), OCH₂, and SCH₂; Q is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-amino-5-carboxyphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y⁰ is selected from the group consisting of:

R¹⁶ and R¹⁹ are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R¹⁷ and R¹⁸ are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Q^(b) is C(NR²⁵)NR²³R²⁴ or hydrido; R²³, R²⁴, and R²⁵ are independently hydrido or methyl; and Q^(s) is CH₂.
 20. Compound of claim 17, or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, C2-C8 alkyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^(b); A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is N(R⁷); R⁷ is hydrido or alkyl; R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, alkyl, halo, haloalkyl, aminoalkyl, and hydroxyalkyl; R² is Z⁰-Q; Z⁰ is a bond; Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkoxy, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboxy, carboxamido, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, alkoxy, alkoxyamino, hydroxy, amino, alkylamino, alkylsulfonamido, amidosulfonyl, hydroxyalkyl, aminoalkyl, halo, haloalkyl, carboalkoxy, carboxy, carboxamido, carboxyalkyl, and cyano; Y⁰ is the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently hydrido or alkyl; and Q^(s) is CH₂.
 21. Compound of claim 20 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butenyl, 2-butynyl, sec-butyl, tert-butyl, isobutyl, 2-methylpropenyl, 1-pentyl, 2-pentenyl, 3-pentenyl, 2-pentynyl, 3-pentynyl, 2-pentyl, 3-pentyl, 2-methylbutyl, 2-methyl-2-butenyl, 3-methylbutyl, 3-methyl-2-butenyl, 1-hexyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 2-hexyl, 1-methyl-2-pentenyl, 1-methyl-3-pentenyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl, 3-hexyl, 1-ethyl-2-butenyl, 1-heptyl, 2-heptenyl, 3-heptenyl, 4-heptenyl, 5-heptenyl, 2-heptynyl, 3-heptynyl, 4-heptynyl, 5-heptynyl, 2-heptyl, 1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methyl-4-hexenyl, 1-methyl-2-hexynyl, 1-methyl-3-hexynyl, 1-methyl-4-hexynyl, 3-heptyl, 1-ethyl-2-pentenyl, 1-ethyl-3-pentenyl, 1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 2,2,2-trifluoroethyl, 2,2-difluoropropyl, 4-trifluoromethyl-5,5,5-trifluoropentyl, 4-trifluoromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and 3,3,3-trifluoropropyl, wherein each member of group B is optionally substituted at any carbon up to and including 5 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, carboxy, cyano, and Q^(b); A is selected from the group consisting of: (i) a bond, NH, N(CH₃), CH₂, CH₃CH, and CH₂CH₂; and (ii) CH₂N(CH₃), CH₂N(CH₂CH₃), CH₂CH₂N(CH₃), and CH₂CH₂N(CH₂CH₃) with the proviso that B is hydrido; X^(o) is selected from the group consisting of hydrido, aminomethyl, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 2-hydroxyethyl, chloro, and fluoro; R² is selected from the group consisting of phenyl and 2-thienyl, 2-furyl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl, 2-pyridyl, and 3-pyridyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹¹, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, methylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, amidocarbonyl, N-methylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, carboxy, carboxymethyl, amino, acetamido, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoroacetamido, aminomethyl, N-methylamino, dimethylamino, methoxyamino, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, methanesulfonamido, methoxycarbonyl, fluoro, chloro, bromo, and cyano; Y⁰ is selected from the group consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, amidino, guanidino, methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, methylthio, ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴); R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, methyl, and ethyl; and Q^(s) is CH₂.
 22. Compound of claim 21 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butyl, (R)-2-butyl, (S)-2-butyl, tert-butyl, isobutyl, 1-pentyl, 3-pentyl, 2-methylbutyl, 2,2,2-trifluoroethyl, 6-amidocarbonylhexyl, 4-methyl-2-pentyl, 3-hydroxypropyl, 1-methoxy-2-propyl, 2-methoxyethyl, 2-methyl-2-butyl, 3-methyl-2-butyl, 2-dimethylaminopropyl, 2-cyanoethyl, 6-hydroxyhexyl, 2-hydroxyethyl, 2-amidinoethyl, 2-guanidinoethyl, 3-guanidinopropyl, 4-guanidinobutyl, 3-hydroxypropyl, 4-hydroxybutyl, 6-cyanohexyl, 2-dimethylaminoethyl, 3-methylbutyl, 2-methylbutyl, (S)-2-methylbutyl, 3-aminopropyl, 2-hexyl, and 4-aminobutyl; A is selected from the group consisting of a bond, CH₂, CH₃CH, and CH₂CH₂; X⁰ is selected from the group consisting of hydrido, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 2-hydroxyethyl, chloro, and fluoro; R² is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-carboxyphenyl, 3-carboxy-5-aminophenyl, 3-carboxy-5-hydroxyphenyl, 3-carboxymethyl-5-aminophenyl, 3-carboxymethyl-5-hydroxyphenyl, 3-carboxymethylphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2,5-difluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y⁰ is selected from the group consisting of:

R¹⁶ and R¹⁹ are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R¹⁷ and R¹⁸ are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Q^(b) is C(R²⁵)NR²³R²⁴; R²³, R²⁴, and R²⁵ are independently hydrido or methyl; and Q^(s) is CH₂.
 23. Compound of claim 22 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butyl, (R)-2-butyl, (S)-2-butyl, tert-butyl, isobutyl, 1-pentyl, 3-pentyl, 2-methylbutyl, 2,2,2-trifluoroethyl, 6-amidocarbonylhexyl, 4-methyl-2-pentyl, 3-hydroxypropyl, 1-methoxy-2-propyl, 2-methoxyethyl, 2-methyl-2-butyl, 3-methyl-2-butyl, 2-dimethylaminopropyl, 2-cyanoethyl, 6-hydroxyhexyl, 2-hydroxyethyl, 2-amidinoethyl, 2-guanidinoethyl, 3-guanidinopropyl, 4-guanidinobutyl, 3-hydroxypropyl, 4-hydroxybutyl, 6-cyanohexyl, 2-dimethylaminoethyl, 3-methylbutyl, 2-methylbutyl, (S)-2-methylbutyl, 3-aminopropyl, 2-hexyl, and 4-aminobutyl; A is selected from the group consisting of a bond, CH₂, CH₃CH, and CH₂CH₂; X^(o) is selected from the group consisting of hydrido, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, chloro, and fluoro; R² is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 3-aminophenyl, 3-carboxy-5-aminophenyl, 3-chlorophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-bromo-2-thienyl, 2-thienyl, and 3-thienyl; and Y⁰ is selected from the group consisting of 5-amidino-2-thienylmethyl, 4-amidinobenzyl, 2-fluoro-4-amidinobenzyl, and 3-fluoro-4-amidinobenzyl.
 24. Compound of claim 17, or a pharmaceutically acceptable salt thereof, wherein: R² is 3-aminophenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 5-amino-2-fluorophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is is methyl; R² is 2-methyl-3-aminophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-propenyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is (R)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-propynyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 3-pentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-aminophenyl, B is hydrido, A is CH₂, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is ethyl, A is CH₂, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-methypropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-propyl, A is CH₃CH, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is propyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 6-amidocarbonylhexyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is tert-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-aminophenyl, B is tert-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 3-hydroxypropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-methylpropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 1-methoxy-2-propyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-methoxyethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-propyl, A is a bond, Y⁰ is 5-amidino-2-thienylmethyl, and X^(O) is methyl; R² is 5-amino-2-methylthiophenyl, B is 2-propyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-carboxyphenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-carbomethoxyphenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is ethyl; R² is 3-amino-5-carboxamidophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzyl-N-methylamidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-phenyl-2-propyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2,4-dichlorobenzyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(4-bromobenzyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(3-trifluoromethylbenzyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-isobutylamidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-cycloheptylamidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-pyridylmethyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(3-pyridylmethyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-(4-methoxyphenyl)ethyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(3-phenylpropyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2,2-diphenylethyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-naphthylmethyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(1,2,3,4-tetrahydronaphth-2-ylmethyl)amidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-propyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and X^(O) is hydrido; R² is 3-carboxyphenyl, B is 2-propyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-aminophenyl, B is 2-propyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-amino-5-carboxyphenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-carboxyphenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-carboxyphenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and X^(O) is methyl; R² is 3-amino-5-carboxyphenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-carboxyphenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is isopropyl, A is a bond, Y° is 4-amidino-2-fluorobenzylbenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; or R² is 3,5-diaminophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzylbenzyl, and R¹ is hydrido.
 25. Compound of claim 2 of the Formula:

or a pharmaceutically acceptable salt thereof, wherein; B is a C3-C7 cycloalkyl or a C4-C6 saturated heterocyclyl, wherein (a) each ring carbon may be optionally substituted with R₃₃, (b) a ring carbon, other than the ring carbon at the point of attachment of B to A, may be optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, (c) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (d) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (e) a ring carbon or nitrogen atom, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (f) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², (g) a ring carbon or nitrogen, if present, in a first gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹⁰, is optionally substituted by R¹¹, (h) a ring carbon or nitrogen, if present, in a second gamma position relative to the carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹², is optionally substituted by R³³, and (i) a ring carbon or nitrogen, if present, in a delta position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹¹ and R³³, respectively, is optionally substituted by R³⁴; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy, carboxamido, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido, amidosulfonyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano; R³³ and R³⁴ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, and cyano; and R³³ is optionally Q^(b); A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is (R⁷)NC(O) or N(R⁷); R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl; R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, amino, alkyl, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy, hydroxyalkyl, and alkylthio; R² is Z⁰-Q; Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂, W⁰—(CH(R⁴²))_(p) wherein p is 0 or 1 and W⁰ is selected from the group consisting of O, S, and N(R⁴¹); R⁴¹ and R⁴² are independently hydrido or alkyl; Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; Y⁰ is the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, and C(NR²⁵)NR²³R²⁴, with the proviso that no more than one of R²⁰ and R²¹ is hydroxy and with the further proviso that no more than one of R²³ and R²⁴ is hydroxy; R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, alkyl, and hydroxy; and Q^(s) is selected from the group consisting of a bond, CH₂, and CH₂CH₂.
 26. Compound of claim 25 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of cyclopropyl, cyclobutyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, thiaetan-3-yl, cyclopentyl, cyclohexyl, norbornyl, 7-oxabicyclo[2.2.1]heptan-2-yl, bicyclo[3.1.0]hexan-6-yl, cycloheptyl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 4H-2-pyranyl, 4H-3-pyranyl, 4H-4-pyranyl, 4H-pyran-4-one-2-yl, 4H-pyran-4-one-3-yl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein (a) each ring carbon may be optionally substituted with R₃₃, (b) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (c) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (d) a ring carbon or nitrogen atom, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, and (e) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹²; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, fluoro, chloro, bromo, cyano, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; R³³ is selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and Q^(b); A is selected from the group consisting of a bond, NH, N(CH₃), N(OH), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O), C(O)NH, C(O)N(CH₃), CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, and CF₃CHCH₂; X^(o) is selected from the group consisting of hydrido, hydroxy, amino, aminomethyl, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methylthio, ethylthio, trifluoromethoxy,1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo; R² is Z⁰-Q; Z⁰ is selected from the group consisting of a bond, CH₂, CH₂CH₂, O, S, NH, N(CH₃), OCH₂, SCH₂, N(H)CH₂, and N(CH₃)CH₂; Q is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; Y⁰ is selected from the group consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, and cyano; Q^(b) is C(NR²⁵)NR²³R²⁴ or hydrido, with the proviso that no more than one of R²³ and R²⁴ is hydroxy; R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, methyl, ethyl, and hydroxy; and Q^(s) is selected from the group consisting of a bond, CH₂ and CH₂CH₂.
 27. Compound of claim 26 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, 1-pyrrolidinyl, 1-piperidinyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, 7-oxabicyclo[2.2.1]heptan-2-yl, bicyclo[3.1.0]hexan-6-yl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 4H-2-pyranyl, 4H-3-pyranyl, 4H-4-pyranyl, 4H-pyran-4-one-2-yl, 4H-pyran-4-one-3-yl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl; A is selected from the group consisting of a bond, CH₂, NHC(O), CH₂CH₂, and CH₂CH₂CH₂; X⁰ is selected from the group consisting of hydrido, hydroxy, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, fluoro, chloro, and bromo; R² is Z⁰-Q; Z⁰ is selected from the group consisting of a bond, CH₂, O, S, NH, N(CH₃), OCH₂, and SCH₂; Q is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-amino-5-carboxyphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y⁰ is selected from the group consisting of:

R¹⁶ and R¹⁹ are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R¹⁷ and R¹⁸ are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Q^(b) is C(NR²⁵)NR²³R²⁴ or hydrido; R²³, R²⁴, and R²⁵ are independently hydrido or methyl; and Q^(s) is CH₂.
 28. Compound of claim 25, or a pharmaceutically acceptable salt thereof, wherein; B is a C3-C7 cycloalkyl or a C4-C6 saturated heterocyclyl, wherein (a) each ring carbon is optionally substituted with R³³, (b) a ring carbon, other than the ring carbon at the point of attachment, is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, (c) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (d) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (e) a ring carbon or nitrogen, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (f) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², (g) a ring carbon or nitrogen, if present, in a first gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹⁰, is optionally substituted by R¹¹, and (h) a ring carbon or nitrogen, if present, in a second gamma position relative to the carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹², is optionally substituted by R³³; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkoxy, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboxy, carboxamido, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, alkoxy, alkoxyamino, hydroxy, amino, alkylamino, alkylsulfonamido, amidosulfonyl, hydroxyalkyl, aminoalkyl, halo, haloalkyl, carboalkoxy, carboxy, carboxamido, carboxyalkyl, and cyano; R³³ and R³⁴ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboalkoxy, carboxy, carboxamido, and cyano, and R³³ is optionally Q^(b); A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is N(R⁷); R⁷ is hydrido or alkyl; R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, alkyl, halo, haloalkyl, aminoalkyl, and hydroxyalkyl; R² is Z⁰-Q; Z⁰ is a bond; Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; Y⁰ is the formula

wherein J⁵, J⁶, D⁵, D⁶ and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J⁵ and J⁶ is absent when T is a 5-membered heteroaryl ring, J⁵ is optionally substituted by R¹⁷ when J⁵ is a carbon atom, J⁶ is optionally substituted by R¹⁸ when J⁶ is a carbon atom, D⁵ is optionally substituted by R¹⁶ when D⁵ is a carbon atom and D⁶ is optionally substituted by R¹⁹ when D⁶ is a carbon atom; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, and C(NR²⁵)NR²³R²⁴; R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently hydrido or alkyl; and Q^(s) is CH₂.
 29. Compound of claim 28 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, bicyclo[3.1.0]hexan-6-yl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein (a) each ring carbon may be optionally substituted with R₃₃, (b) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (c) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (d) a ring carbon or nitrogen atom, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, and (e) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹²; R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, methylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, amidocarbonyl, N-methylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, carboxy, carboxymethyl, amino, acetamido, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoroacetamido, aminomethyl, N-methylamino, dimethylamino, methoxyamino, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, methanesulfonamido, methoxycarbonyl, fluoro, chloro, bromo, and cyano; R³³ is selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, carboxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, cyano, and Q^(b); A is selected from the group consisting of a bond, NH, N(CH₃), CH₂, CH₃CH, CH₂CH₂, and CH₂CH₂CH₂; X^(o) is selected from the group consisting of hydrido, aminomethyl, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 2-hydroxyethyl, chloro, and fluoro; R² is selected from the group consisting of phenyl and 2-thienyl, 2-furyl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl, 2-pyridyl, and 3-pyridyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹¹, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; Y⁰ is selected from the group consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, amidino, guanidino, methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, methylthio, ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and cyano; Q^(b) is NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴; R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, methyl, and ethyl; and Q^(s) is CH₂.
 30. Compound of claim 29 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, 1-pyrrolidinyl and 1-piperidinyl; A is selected from the group consisting of a bond, CH₂, CH₂CH₂ and CH₂CH₂CH₂; X^(o) is selected from the group consisting of hydrido, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 2-hydroxyethyl, chloro, and fluoro; R² is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-carboxyphenyl, 3-carboxy-5-aminophenyl, 3-carboxy-5-hydroxyphenyl, 3-carboxymethyl-5-aminophenyl, 3-carboxymethyl-5-hydroxyphenyl, 3-carboxymethylphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2,5-difluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y⁰ is selected from the group consisting of:

R¹⁶ and R¹⁹ are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R¹⁷ and R¹⁸ are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Q^(b) is C(NR²⁵)NR²³R²⁴; R²³, R²⁴, and R²⁵ are independently hydrido or methyl; and Q^(s) is CH₂.
 31. Compound of claim 30 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, and 1-piperidinyl; A is selected from the group consisting of a bond, CH₂, CH₂CH₂ and CH₂CH₂CH₂; X^(o) is selected from the group consisting of hydrido, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, chloro, and fluoro; R² is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 3-aminophenyl, 3-carboxy-5-aminophenyl, 3-chlorophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-bromo-2-thienyl, 2-thienyl, and 3-thienyl; and Y⁰ is selected from the group consisting of 5-amidino-2-thienylmethyl, 4-amidinobenzyl, 2-fluoro-4-amidinobenzyl, and 3-fluoro-4-amdinobenzyl.
 32. Compound of claim 25, or a pharmaceutically acceptable salt thereof, wherein: R² is 3-aminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X⁰ is methyl; R² is 3-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is is methyl; R² is 3-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and X⁰ is methyl; R² is 3-aminophenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 5-amino-2-thienyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is cyclopropyl, A is CH₂, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 2-(2R)-bicyclo[2.2.1]-heptyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is cyclohexyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-aminophenyl, B is oxalan-2-yl, A is CH₂, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 1-piperidinyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-aminophenyl, B is 1-pyrrolidinyl, A is CH₂CH₂CH₂, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-carbomethoxyphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-amino-5-carboxyphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3,5-diaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 2-amino-6-carboxy-4-pyridyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-amino-5-carbomethoxyphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-carboxyphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3,5-diaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and X^(O) is methyl; R² is 3,5-diaminophenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-carboxy-5-aminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-carboxy-5-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-carboxy-5-aminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-carboxy-5-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-carboxy-5-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and X^(O) is methyl; R² is 3-carboxy-5-aminophenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and X^(O) is methyl; R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is hydrido; R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and X^(O) is methyl; or R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and X^(O) is methyl.
 33. Compound of claim 2 of the Formula:

or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of: (i) phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³², (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³⁶, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³², is optionally substituted by R³³, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³⁶, is optionally substituted by R³⁵, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R³³ and R³⁵, respectively, is optionally substituted by R³⁴; (ii) hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶; and (iii) C3-C12 cycloalkyl or a C4-C9 saturated heterocyclyl, wherein (a) each ring carbon may be optionally substituted with R₃₃, (b) a ring carbon, other than the ring carbon at the point of attachment of B to A, may be optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, (c) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (d) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (e) a ring carbon or nitrogen atom, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (f) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², (g) a ring carbon or nitrogen, if present, in a first gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹⁰, is optionally substituted by R¹¹, (h) a ring carbon or nitrogen, if present, in a second gamma position relative to the carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹², is optionally substituted by R³³, and (i) a ring carbon or nitrogen, if present, in a delta position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹¹ and R³³, respectively, is optionally substituted by R³⁴; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy, hydroxy, amino, alkoxyamino, haloalkanoyl, nitro, alkylamino, alkylthio, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkylsulfonamido, amidosulfonyl, alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyalkyl, alkylamino, carboalkoxy, carboxy, carboxamido, cyano, and Q^(b); R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, alkoxyamino, alkanoyl, haloalkanoyl, amidino, guanidino, alkylenedioxy, haloalkylthio, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylthio, alkylsulfinyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, alkylsulfamido, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, amidosulfonyl, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, and cyano; A is a bond or (CH(R¹⁵))_(pa)-(W⁷)_(rr) wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is selected from the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and N(R⁷); R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl; R¹⁵ is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl; X⁰ is selected from the group consisting of hydrido, amino, alkyl, cyano, halo, haloalkyl, haloalkoxy, aminoalkyl, hydroxy, alkoxy, hydroxyalkyl, and alkylthio; R² is Z⁰-Q; Z⁰ is selected from the group consisting of: (i) a bond, (CR⁴¹R⁴²)_(q) wherein q is 1 or 2, and (CH(R⁴¹))_(g)—W⁰—(CH(R⁴²))_(p) wherein g and p are integers independently selected from 0 through 3 and W⁰ is selected from the group consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹); and (ii) (CH(R⁴¹))_(e)—W²²—(CH(42))_(h) wherein e and h are independently 0 or 1 and W²² is selected from the group consisting of CR⁴¹═CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, wherein Z⁰ is directly bonded to the 4-pyrone ring and W²² is optionally substituted with one or more substituents selected from the group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³; R⁴¹ and R⁴² are independently selected from the group consisting of hydrido, hydroxy, alkyl, and amino; Q is selected from the group consisting of: (i) phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R; and (ii) hydrido with the proviso that Z⁰ is selected from other than a bond; K is CHR^(4a) wherein R^(4a) is selected from the group consisting of hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl; E⁰ is selected from the group consisting of a bond, C(O)N(H), (H)NC(O), (R⁷)NS(O)₂, and S(O)₂N(R⁷); Y^(AT) is Q^(b)-Q^(s); Q^(s) is (CR³⁷R³⁸)_(b) wherein b is an integer selected from 1 through 4, R³⁷ is selected from the group consisting of hydrido, alkyl, and haloalkyl, and R³⁸ is selected from the group consisting of hydrido, alkyl, haloalkyl, aroyl, and heteroaroyl with the proviso that there is at least one aroyl or heteroaroyl substituent, with the further proviso that no more than one aroyl or heteroaroyl is bonded to (CR³⁷R³⁸)_(b) at the same time, with the still further proviso that said aroyl and said heteroaroyl are optionally substituted with one or more substituents selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹, with another further proviso that said aroyl and said heteroaroyl are bonded to the CR³⁷R³⁸ that is directly bonded to E⁰, with still another further proviso that no more than one alkyl or one haloalkyl is bonded to a CR³⁷R³⁸, and with the additional proviso that said alkyl and haloalkyl are bonded to a carbon other than the one bonding said aroyl or said heteroaroyl; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Q^(b) is selected from the group consisting of NR²⁰R²¹, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso that no more than one of R²⁰ and R²¹ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino and with the further proviso that no more than one of R²³ and R²⁴ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino and; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, amino, alkylamino and dialkylamino.
 34. Compound of claim 33 of the Formula:

or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of: (i) phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, and 5-isoxazolyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³², (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R³⁶, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³², is optionally substituted by R³³, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R³⁶, is optionally substituted by R³⁵, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R³³ and R³⁵, respectively, is optionally substituted by R³⁴; (ii) hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butenyl, 2-butynyl, sec-butyl, tert-butyl, isobutyl, 2-methylpropenyl, 1-pentyl, 2-pentenyl, 3-pentenyl, 2-pentynyl, 3-pentynyl, 2-pentyl, 3-pentyl, 2-methylbutyl, 2-methyl-2-butenyl, 3-methylbutyl, 3-methyl-2-butenyl, 1-hexyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 2-hexyl, 1-methyl-2-pentenyl, 1-methyl-3-pentenyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl, 3-hexyl, 1-ethyl-2-butenyl, 1-heptyl, 2-heptenyl, 3-heptenyl, 4-heptenyl, 5-heptenyl, 2-heptynyl, 3-heptynyl, 4-heptynyl, 5-heptynyl, 2-heptyl, 1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methyl-4-hexenyl, 1-methyl-2-hexynyl, 1-methyl-3-hexynyl, 1-methyl-4-hexynyl, 3-heptyl, 1-ethyl-2-pentenyl, 1-ethyl-3-pentenyl, 1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 2,2,2-trifluoroethyl, 2,2-difluoropropyl, 4-trifluoromethyl-5,5,5-trifluoropentyl, 4-trifluoromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and 3,3,3-trifluoropropyl, wherein each member of group B is optionally substituted at any carbon up to and including 5 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³³, and R³⁶; and (iii) cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, bicyclo[3.1.0]hexan-6-yl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein (a) each ring carbon may be optionally substituted with R₃₃, (b) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (c) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (d) a ring carbon or nitrogen atom, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, and (e) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹²; R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, carboxy, cyano, and Q^(b); R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, methylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano; R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, amidocarbonyl, N-methylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, carboxy, carboxymethyl, amino, acetamido, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoroacetamido, aminomethyl, N-methylamino, dimethylamino, methoxyamino, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, methanesulfonamido, methoxycarbonyl, fluoro, chloro, bromo, and cyano; A is selected from the group consisting of a bond, NH, N(CH₃), CH₂, CH₃CH, CH₂CH₂, and CH₂CH₂CH₂; X^(o) is selected from the group consisting of hydrido, hydroxy, amino, aminomethyl, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methylthio, ethylthio, trifluoromethoxy,1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo; R² is selected from the group consisting of phenyl and 2-thienyl, 2-furyl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl, 2-pyridyl, and 3-pyridyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R⁹, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R¹³, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R⁹, is optionally substituted by R¹⁰, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R¹³, is optionally substituted by R¹², and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R¹⁰ and R¹², respectively, is optionally substituted by R¹¹; Y^(AT) is Q^(b)-Q^(s); Q^(s) is selected from the group consisting of: C[R³⁷(benzoyl)(CR³⁷R³⁸)_(b)], C[R³⁷(2-pyridylcarbonyl)(CR³⁷R³⁸)_(b)], C[R³⁷(3-pyridylcarbonyl)(CR³⁷R³⁸)_(b)], C[R³⁷(4-pyridylcarbonyl)(CR³⁷R³⁸)_(b)], C[R³⁷(2-thienylcarbonyl)(CR³⁷R³⁸)_(b)], C[R³⁷(3-thienylcarbonyl)(CR³⁷R³⁸)_(b)], C[R³⁷(2-thiazolylcarbonyl)(CR³⁷R³⁸)_(b)], C[R³⁷(4-thiazolylcarbonyl)(CR³⁷R³⁸)_(b)], and C[R³⁷(5-thiazolylcarbonyl)((CR³⁷R³⁸)_(b)], wherein b is an integer selected from 1 through 3, R³⁷ and R³⁸ are independently selected from the group consisting of hydrido, alkyl, and haloalkyl, with the proviso that said benzoyl and the heteroaroyls are optionally substituted with one or more substituents selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹ with the proviso that R¹⁷ and R¹⁸ are optionally substituted at a carbon selected from other than the meta and para carbons relative to the carbonyl of the benzoyl or heteroaroyl, with the further proviso that said benzoyl or said heteroaroyl are bonded to the carbon directly bonded to amide nitrogen of the 1-(amidocarbonymethylene) group, and with the still further proviso that is no more than one alkyl or one haloalkyl is bonded to a CR³⁷R³⁸; R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, amidino, guanidino, methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, methylthio, ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and cyano; Q^(b) is C(NR²⁵)NR²³R²⁴ or N(R²⁶)C(NR²⁵)N(R²³)(R²⁴); and R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, methyl, and ethyl.
 35. Compound of claim 34 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of: (i) 2-aminophenyl, 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 3-fluorophenyl, 3,4-difluorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyaminophenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoromethylphenyl, 2-imidazoyl, 2-pyridyl, 3-pyridyl, 5-chloro-3-trifluoromethyl-2-pyridyl, 4-pyridyl, 2-thienyl, 3-thienyl, and 3-trifluoromethyl-2-pyridyl; (ii) hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butyl, (R)-2-butyl, (S)-2-butyl, tert-butyl, isobutyl, 1-pentyl, 3-pentyl, 2-methylbutyl, 2,2,2-trifluoroethyl, 6-amidocarbonylhexyl, 4-methyl-2-pentyl, 3-hydroxypropyl, 1-methoxy-2-propyl, 2-methoxyethyl, 2-methyl-2-butyl, 3-methyl-2-butyl, 2-dimethylaminopropyl, 2-cyanoethyl, 6-hydroxyhexyl, 2-hydroxyethyl, 2-amidinoethyl, 2-guanidinoethyl, 3-guanidinopropyl, 4-guanidinobutyl, 3-hydroxypropyl, 4-hydroxybutyl, 6-cyanohexyl, 2-dimethylaminoethyl, 3-methylbutyl, 2-methylbutyl, (S)-2-methylbutyl, 3-aminopropyl, 2-hexyl, and 4-aminobutyl; and (iii) cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, 1-pyrrolidinyl and 1-piperidinyl; A is selected from the group consisting of a bond, CH₂, CH₃CH, CH₂CH₂, and CH₂CH₂CH₂; X⁰ is selected from the group consisting of hydrido, hydroxy, 1-aminoethyl, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, fluoro, chloro, and bromo; R² is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-carboxyphenyl, 3-carboxy-5-aminophenyl, 3-carboxy-5-hydroxyphenyl, 3-carboxymethyl-5-aminophenyl, 3-carboxymethyl-5-hydroxyphenyl, 3-carboxymethylphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, ,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2,5-difluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y^(AT) is Q^(b)-Q^(s); Q^(s) is selected from the group consisting of: [CH(benzoyl)](CH₂)_(b), [CH(2-pyridylcarbonyl)](CH₂)_(b), [CH(3-pyridylcarbonyl)](CH₂)_(b), [CH(4-pyridylcarbonyl)](CH₂)_(b), [CH(2-thienylcarbonyl)](CH₂)_(b), [CH(3-thienylcarbonyl)](CH₂)_(b), [CH(2-thiazolylcarbonyl)](CH₂)_(b), [CH(4-thiazolylcarbonyl)](CH₂)_(b), and [CH(5-thiazolylcarbonyl)](CH₂)_(b), wherein b is an integer selected from 1 through 3, with the proviso that said benzoyl and said heteroaroyls are optionally substituted with one or more substituents selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹ with the proviso that R¹⁷ and R¹⁸ are optionally substituted at a carbon selected from other than the meta and para carbons relative to the carbonyl of the benzoyl or the heteroaroyl, and that said benzoyl or said heteroaroyl are bonded to the carbon directly bonded to amide nitrogen of the 1-(amidocarbonymethylene) group; R¹⁶ and R¹⁹ are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R¹⁷ and R¹⁸ are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Q^(b) is N(R²⁶)C(NR²⁵)N(R²³)(R²⁴); and R²³, R²⁴, R²⁵, and R²⁶ are independently hydrido or methyl.
 36. Compound of claim 35 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of: (i) 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 4-methylphenyl, phenyl, 2-imidazoyl, 3-pyridyl, 4-pyridyl, and 3-trifluoromethyl-2-pyridyl; (ii) hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butyl, (R)-2-butyl, (S)-2-butyl, tert-butyl, isobutyl, 1-pentyl, 3-pentyl, 2-methylbutyl, 2,2,2-trifluoroethyl, 6-amidocarbonylhexyl, 4-methyl-2-pentyl, 3-hydroxypropyl, 1-methoxy-2-propyl, 2-methoxyethyl, 2-methyl-2-butyl, 3-methyl-2-butyl, 2-dimethylaminopropyl, 2-cyanoethyl, 6-hydroxyhexyl, 2-hydroxyethyl, 2-amidinoethyl, 2-guanidinoethyl, 3-guanidinopropyl, 4-guanidinobutyl, 3-hydroxypropyl, 4-hydroxybutyl, 6-cyanohexyl, 2-dimethylaminoethyl, 3-methylbutyl, 2-methylbutyl, (S)-2-methylbutyl, 3-aminopropyl, 2-hexyl, and 4-aminobutyl; and (iii) cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, and 1-piperidinyl; A is selected from the group consisting of a bond, CH₂, CH₂CH₂ and CH₂CH₂CH₂; X^(o) is selected from the group consisting of hydrido, aminomethyl, methyl, ethyl, trifluoromethyl, 2,2,2-trifluoroethyl, hydroxymethyl, 2-hydroxyethyl, chloro, and fluoro; R² is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 3-aminophenyl, 3-carboxy-5-aminophenyl, 3-chlorophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-bromo-2-thienyl, 2-thienyl, and 3-thienyl; and Y^(AT) is selected from the group consisting of 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, 5-guanidino-1-oxo-1-(4-thiazolyl)-2-pentyl, 5-guanidino-1-oxo-1-(5-thiazolyl)-2-pentyl, 5-guanidino-1-oxo-1-(4-amino-2-thiazolyl)-2-pentyl, and 5-guanidino-1-oxo-1-phenyl-2-pentyl.
 37. A compound as recited in claim 33, or a pharmaceutically acceptable salt thereof, wherein: R² is 3-aminophenyl, B is phenyl, A is CH₂CH₂, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3,5-diaminophenyl, B is phenyl, A is CH₂CH₂, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-carboxy-5-aminophenyl, B is phenyl, A is CH₂CH₂, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is phenyl, A is CH₂CH₂, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3,5-diaminophenyl, B is isopropyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-carboxy-5-aminophenyl, B is isopropyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is isopropyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3,5-diaminophenyl, B is cyclobutyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-carboxy-5-aminophenyl, B is cyclobutyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-aminophenyl, B is phenyl, A is CH₂CH₂, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3,5-diaminophenyl, B is phenyl, A is CH₂CH₂, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-carboxy-5-aminophenyl, B is phenyl, A is CH₂CH₂, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is phenyl, A is CH₂CH₂, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3,5-diaminophenyl, B is isopropyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-carboxy-5-aminophenyl, B is isopropyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is isopropyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3,5-diaminophenyl, B is cyclobutyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; R² is 3-carboxy-5-aminophenyl, B is cyclobutyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido; or R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is single bond, Y^(AT) is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and X^(O) is hydrido.
 38. A composition for inhibiting thrombotic conditions in blood comprising a compound of claim 1 and a pharmaceutically acceptable carrier.
 39. A method for inhibiting thrombotic conditions in blood comprising adding to blood a therapeutically effective amount of a composition of claim
 38. 40. A method for inhibiting formation of blood platelet aggregates in blood comprising adding to blood a therapeutically effective amount of a composition of claim
 38. 41. A method for inhibiting thrombus formation in blood comprising adding to blood a therapeutically effective amount of a composition of claim
 38. 42. A method for treating or preventing venuous thromboembolism and pulmonary embolism in a mammal comprising administering to the mammal a therapeutically effective amount of a composition of claim
 38. 43. A method for treating or preventing deep vein thrombosis in a mammal comprising administering to the mammal a therapeutically effective amount of a composition of claim
 38. 44. A method for treating or preventing cardiogenic thromboembolism in a mammal comprising administering to the mammal a therapeutically effective amount of a composition of claim
 38. 45. A method for treating or preventing thromboembolic stroke in humans and other mammals comprising administering to the mammal a therapeutically effective amount of a composition of claim
 38. 46. A method for treating or preventing thrombosis associated with cancer and cancer chemotherapy in humans and other mammals comprising administering to the mammal a therapeutically effective amount of a composition of claim
 38. 47. A method for treating or preventing unstable angina in humans and other mammals comprising administering to the mammal a therapeutically effective amount of a composition of claim
 38. 48. A method for inhibiting thrombus formation in blood comprising adding to blood a therapeutically effective amount of a compound of claim 1 with a therapeutically effective amount of fibrinogen receptor antagonist. 